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Boulder, Colorado

Updated: Wikipedia source

Boulder, Colorado

Boulder is a home rule city that is the county seat of, and the most populous municipality in, Boulder County, Colorado United States. With a population of 108,250 at the 2020 census, it is the 12th-most populous city in Colorado. Boulder is the primary city of the Boulder, CO Metropolitan Statistical Area, which had 330,758 residents in 2020, and is part of the Front Range Urban Corridor. Boulder is located at the base of the foothills of the Rocky Mountains, at an elevation of 5,430 feet (1,655 m) above sea level. The city is 25 miles (40 km) northwest of the Colorado state capital of Denver. Boulder is a college town, hosting the University of Colorado Boulder, the flagship and largest campus of the University of Colorado system as well as numerous research institutes. Starting in 2027, Boulder will become the new home of the Sundance Film Festival.

Infobox

Country
United States
State
Colorado
County
Boulder
Settled
1858 as Boulder City, N.T.
Incorporated
November 4, 1871
• Type
Home rule city
• Mayor
Aaron Brockett (D)
• Mayor Pro Tem
Lauren Folkerts
• home rule city
108,250
• Land
26.328 sq mi (68.188 km2)
• Water
1.038 sq mi (2.689 km2)
Elevation
5,319 ft (1,621 m)
• Estimate (2024)
106,803
• Rank
12th in Colorado324th in United States
• Density
4,112/sq mi (1,588/km2)
• Metro
$35.608 billion (2022)
• CSA
3,623,560 (17th)
• Front Range
5,055,344
Demonym
Boulderite
Time zone
UTC−07:00 (MST)
• Summer (DST)
UTC−06:00 (MDT)
ZIP Codes
80301-80310, 80314, 80321-80323, 80328, 80329
Area codes
303/720/983
GNIS pop ID
178680
GNIS city ID
2409883
FIPS code
08-07850
Website
City of Boulder
• Home rule city
108,250

Tables

Month
Month
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Month
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Jan
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Feb
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Mar
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Apr
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
May
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Jun
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Jul
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Aug
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Sep
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Oct
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Nov
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Dec
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Year
Record high °F (°C)
Record high °F (°C)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Record high °F (°C)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
73(23)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
79(26)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
90(32)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
88(31)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
95(35)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
104(40)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
104(40)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
102(39)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
100(38)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
90(32)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
81(27)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
76(24)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
104(40)
Mean maximum °F (°C)
Mean maximum °F (°C)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Mean maximum °F (°C)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
65.4(18.6)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
66.4(19.1)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
73.9(23.3)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
79.5(26.4)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
86.6(30.3)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
94.2(34.6)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
97.9(36.6)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
95.3(35.2)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
91.5(33.1)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
83.1(28.4)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
72.8(22.7)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
65.4(18.6)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
98.5(36.9)
Mean daily maximum °F (°C)
Mean daily maximum °F (°C)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Mean daily maximum °F (°C)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
47.0(8.3)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
48.3(9.1)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
57.0(13.9)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
62.8(17.1)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
71.3(21.8)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
82.5(28.1)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
88.0(31.1)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
86.0(30.0)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
78.8(26.0)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
65.9(18.8)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
54.5(12.5)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
46.3(7.9)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
65.7(18.7)
Daily mean °F (°C)
Daily mean °F (°C)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Daily mean °F (°C)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
34.3(1.3)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
35.3(1.8)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
43.0(6.1)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
48.7(9.3)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
57.0(13.9)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
66.8(19.3)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
72.5(22.5)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
70.7(21.5)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
63.5(17.5)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
51.6(10.9)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
41.3(5.2)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
33.7(0.9)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
51.5(10.9)
Mean daily minimum °F (°C)
Mean daily minimum °F (°C)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Mean daily minimum °F (°C)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
21.5(−5.8)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
22.3(−5.4)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
29.0(−1.7)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
34.5(1.4)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
42.7(5.9)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
51.1(10.6)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
57.0(13.9)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
55.5(13.1)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
48.1(8.9)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
37.2(2.9)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
28.1(−2.2)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
21.1(−6.1)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
37.3(2.9)
Mean minimum °F (°C)
Mean minimum °F (°C)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Mean minimum °F (°C)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
−0.5(−18.1)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.9(−17.3)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
10.7(−11.8)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
19.4(−7.0)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
30.1(−1.1)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
41.3(5.2)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
50.0(10.0)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
47.4(8.6)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
34.7(1.5)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
20.1(−6.6)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
7.9(−13.4)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.4(−17.6)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
−7.5(−21.9)
Record low °F (°C)
Record low °F (°C)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Record low °F (°C)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
−33(−36)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
−28(−33)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
−13(−25)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
−3(−19)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
17(−8)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
20(−7)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
40(4)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
40(4)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
15(−9)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
−2(−19)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
−12(−24)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
−24(−31)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
−33(−36)
Average precipitation inches (mm)
Average precipitation inches (mm)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Average precipitation inches (mm)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.83(21)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.99(25)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
1.99(51)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
3.05(77)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
3.21(82)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
1.95(50)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
1.83(46)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
1.68(43)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
2.09(53)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
1.62(41)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
1.18(30)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.81(21)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
21.23(540)
Average snowfall inches (cm)
Average snowfall inches (cm)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Average snowfall inches (cm)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
11.3(29)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
15.0(38)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
15.7(40)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
14.7(37)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
2.0(5.1)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.0(0.0)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.0(0.0)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.0(0.0)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
1.0(2.5)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
7.0(18)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
13.1(33)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
13.0(33)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
92.8(235.6)
Average extreme snow depth inches (cm)
Average extreme snow depth inches (cm)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Average extreme snow depth inches (cm)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
5.9(15)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
6.6(17)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
6.5(17)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
4.6(12)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.8(2.0)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.0(0.0)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.0(0.0)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.0(0.0)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.3(0.76)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
3.9(9.9)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
7.0(18)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
6.9(18)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
12.9(33)
Average precipitation days (≥ 0.01 in)
Average precipitation days (≥ 0.01 in)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Average precipitation days (≥ 0.01 in)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
5.8
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
6.9
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
8.1
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
10.1
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
12.6
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
10.1
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
10.6
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
10.5
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
7.9
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
7.1
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
5.9
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
5.4
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
101.0
Average snowy days (≥ 0.1 in)
Average snowy days (≥ 0.1 in)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Average snowy days (≥ 0.1 in)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
5.6
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
6.5
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
6.0
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
4.9
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.9
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.0
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.0
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.0
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
0.5
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
2.1
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
4.8
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
5.5
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
36.8
Mean daily daylight hours
Mean daily daylight hours
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Mean daily daylight hours
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
9.7
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
10.7
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
12.0
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
13.3
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
14.4
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
15.0
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
14.7
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
13.7
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
12.4
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
11.1
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
10.0
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
9.4
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
12.2
Average ultraviolet index
Average ultraviolet index
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Average ultraviolet index
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
2
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
3
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
5
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
7
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
9
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
11
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
11
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
10
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
7
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
5
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
3
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
2
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
6
Source 1: NOAA
Source 1: NOAA
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Source 1: NOAA
Source 2: Weather Atlas (daylight)
Source 2: Weather Atlas (daylight)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Source 2: Weather Atlas (daylight)
Climate data for Boulder, Colorado, 1991–2020 normals, extremes 1893–present
Month
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Year
Record high °F (°C)
73(23)
79(26)
90(32)
88(31)
95(35)
104(40)
104(40)
102(39)
100(38)
90(32)
81(27)
76(24)
104(40)
Mean maximum °F (°C)
65.4(18.6)
66.4(19.1)
73.9(23.3)
79.5(26.4)
86.6(30.3)
94.2(34.6)
97.9(36.6)
95.3(35.2)
91.5(33.1)
83.1(28.4)
72.8(22.7)
65.4(18.6)
98.5(36.9)
Mean daily maximum °F (°C)
47.0(8.3)
48.3(9.1)
57.0(13.9)
62.8(17.1)
71.3(21.8)
82.5(28.1)
88.0(31.1)
86.0(30.0)
78.8(26.0)
65.9(18.8)
54.5(12.5)
46.3(7.9)
65.7(18.7)
Daily mean °F (°C)
34.3(1.3)
35.3(1.8)
43.0(6.1)
48.7(9.3)
57.0(13.9)
66.8(19.3)
72.5(22.5)
70.7(21.5)
63.5(17.5)
51.6(10.9)
41.3(5.2)
33.7(0.9)
51.5(10.9)
Mean daily minimum °F (°C)
21.5(−5.8)
22.3(−5.4)
29.0(−1.7)
34.5(1.4)
42.7(5.9)
51.1(10.6)
57.0(13.9)
55.5(13.1)
48.1(8.9)
37.2(2.9)
28.1(−2.2)
21.1(−6.1)
37.3(2.9)
Mean minimum °F (°C)
−0.5(−18.1)
0.9(−17.3)
10.7(−11.8)
19.4(−7.0)
30.1(−1.1)
41.3(5.2)
50.0(10.0)
47.4(8.6)
34.7(1.5)
20.1(−6.6)
7.9(−13.4)
0.4(−17.6)
−7.5(−21.9)
Record low °F (°C)
−33(−36)
−28(−33)
−13(−25)
−3(−19)
17(−8)
20(−7)
40(4)
40(4)
15(−9)
−2(−19)
−12(−24)
−24(−31)
−33(−36)
Average precipitation inches (mm)
0.83(21)
0.99(25)
1.99(51)
3.05(77)
3.21(82)
1.95(50)
1.83(46)
1.68(43)
2.09(53)
1.62(41)
1.18(30)
0.81(21)
21.23(540)
Average snowfall inches (cm)
11.3(29)
15.0(38)
15.7(40)
14.7(37)
2.0(5.1)
0.0(0.0)
0.0(0.0)
0.0(0.0)
1.0(2.5)
7.0(18)
13.1(33)
13.0(33)
92.8(235.6)
Average extreme snow depth inches (cm)
5.9(15)
6.6(17)
6.5(17)
4.6(12)
0.8(2.0)
0.0(0.0)
0.0(0.0)
0.0(0.0)
0.3(0.76)
3.9(9.9)
7.0(18)
6.9(18)
12.9(33)
Average precipitation days (≥ 0.01 in)
5.8
6.9
8.1
10.1
12.6
10.1
10.6
10.5
7.9
7.1
5.9
5.4
101.0
Average snowy days (≥ 0.1 in)
5.6
6.5
6.0
4.9
0.9
0.0
0.0
0.0
0.5
2.1
4.8
5.5
36.8
Mean daily daylight hours
9.7
10.7
12.0
13.3
14.4
15.0
14.7
13.7
12.4
11.1
10.0
9.4
12.2
Average ultraviolet index
2
3
5
7
9
11
11
10
7
5
3
2
6
Source 1: NOAA
Source 2: Weather Atlas (daylight)
Boulder, Colorado – Racial and ethnic composition Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race. · Demographics › 2020 census
White alone (NH)
White alone (NH)
Race / ethnicity (NH = Non-Hispanic)
White alone (NH)
Pop. 2000
79,721
Pop. 2010
80,873
Pop. 2020
82,700
% 2000
84.21%
% 2010
83.04%
% 2020
76.40%
Black or African American alone (NH)
Black or African American alone (NH)
Race / ethnicity (NH = Non-Hispanic)
Black or African American alone (NH)
Pop. 2000
1,085
Pop. 2010
828
Pop. 2020
1,305
% 2000
1.15%
% 2010
0.85%
% 2020
1.21%
Native American or Alaska Native alone (NH)
Native American or Alaska Native alone (NH)
Race / ethnicity (NH = Non-Hispanic)
Native American or Alaska Native alone (NH)
Pop. 2000
363
Pop. 2010
297
Pop. 2020
394
% 2000
0.38%
% 2010
0.30%
% 2020
0.36%
Asian alone (NH)
Asian alone (NH)
Race / ethnicity (NH = Non-Hispanic)
Asian alone (NH)
Pop. 2000
3,772
Pop. 2010
4,558
Pop. 2020
6,934
% 2000
3.98%
% 2010
4.68%
% 2020
6.41%
Native Hawaiian or Pacific Islander alone (NH)
Native Hawaiian or Pacific Islander alone (NH)
Race / ethnicity (NH = Non-Hispanic)
Native Hawaiian or Pacific Islander alone (NH)
Pop. 2000
46
Pop. 2010
60
Pop. 2020
122
% 2000
0.05%
% 2010
0.06%
% 2020
0.11%
Other race alone (NH)
Other race alone (NH)
Race / ethnicity (NH = Non-Hispanic)
Other race alone (NH)
Pop. 2000
206
Pop. 2010
198
Pop. 2020
582
% 2000
0.22%
% 2010
0.20%
% 2020
0.54%
Mixed race or Multiracial (NH)
Mixed race or Multiracial (NH)
Race / ethnicity (NH = Non-Hispanic)
Mixed race or Multiracial (NH)
Pop. 2000
1,679
Pop. 2010
2,064
Pop. 2020
4,773
% 2000
1.77%
% 2010
2.12%
% 2020
4.41%
Hispanic or Latino (any race)
Hispanic or Latino (any race)
Race / ethnicity (NH = Non-Hispanic)
Hispanic or Latino (any race)
Pop. 2000
7,801
Pop. 2010
8,507
Pop. 2020
11,440
% 2000
8.24%
% 2010
8.74%
% 2020
10.57%
Total
Total
Race / ethnicity (NH = Non-Hispanic)
Total
Pop. 2000
94,673
Pop. 2010
97,385
Pop. 2020
108,250
% 2000
100.00%
% 2010
100.00%
% 2020
100.00%
Race / ethnicity (NH = Non-Hispanic)
Pop. 2000
Pop. 2010
Pop. 2020
% 2000
% 2010
% 2020
White alone (NH)
79,721
80,873
82,700
84.21%
83.04%
76.40%
Black or African American alone (NH)
1,085
828
1,305
1.15%
0.85%
1.21%
Native American or Alaska Native alone (NH)
363
297
394
0.38%
0.30%
0.36%
Asian alone (NH)
3,772
4,558
6,934
3.98%
4.68%
6.41%
Native Hawaiian or Pacific Islander alone (NH)
46
60
122
0.05%
0.06%
0.11%
Other race alone (NH)
206
198
582
0.22%
0.20%
0.54%
Mixed race or Multiracial (NH)
1,679
2,064
4,773
1.77%
2.12%
4.41%
Hispanic or Latino (any race)
7,801
8,507
11,440
8.24%
8.74%
10.57%
Total
94,673
97,385
108,250
100.00%
100.00%
100.00%
· Economy › Top employers
1
1
#
1
Employer
University of Colorado Boulder
# of employees
6,200
2
2
#
2
Employer
Ball Corporation
# of employees
4,800
3
3
#
3
Employer
Boulder Valley School District
# of employees
3,832
4
4
#
4
Employer
St. Vrain Valley School District
# of employees
3,570
5
5
#
5
Employer
Boulder Community Health
# of employees
2,360
6
6
#
6
Employer
Boulder County
# of employees
2,040
7
7
#
7
Employer
City of Boulder
# of employees
1,461
8
8
#
8
Employer
National Center for Atmospheric Research
# of employees
1,187
9
9
#
9
Employer
University Corporation for Atmospheric Research
# of employees
1,187
10
10
#
10
Employer
National Oceanic and Atmospheric Administration
# of employees
870
#
Employer
# of employees
1
University of Colorado Boulder
6,200
2
Ball Corporation
4,800
3
Boulder Valley School District
3,832
4
St. Vrain Valley School District
3,570
5
Boulder Community Health
2,360
6
Boulder County
2,040
7
City of Boulder
1,461
8
National Center for Atmospheric Research
1,187
9
University Corporation for Atmospheric Research
1,187
10
National Oceanic and Atmospheric Administration
870

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  126. "Nobel-Winning Chemist Returns to CU"
    https://www.coloradohistoricnewspapers.org/?a=d&d=ADN19891014-01.2.30
  127. "Artistic genius flows from retarded man"
    https://www.coloradohistoricnewspapers.org/?a=d&d=RMD19830213-01.2.370
  128. "Kristin Davis in the City"
    https://www.coloradohistoricnewspapers.org/?a=d&d=ADN20040101-01.2.107
  129. The New Yorker
    https://www.newyorker.com/magazine/2019/03/18/outdoor-voices-blurs-the-lines-between-working-out-and-everything-else
  130. "Green charm plays pivotal role in trial"
    https://www.coloradohistoricnewspapers.org/?a=d&d=RMD19711117-01.2.34
  131. "Niwot, Indian Name, Suggested for U. S. Forest"
    https://www.coloradohistoricnewspapers.org/?a=d&d=BDC19290411-01.2.93
  132. "Four NFL hosts are a combined 30-2 at home"
    https://www.coloradohistoricnewspapers.org/?a=d&d=ADN20150108-01.2.47
  133. "Young multimillionaire vies for seat"
    https://www.coloradohistoricnewspapers.org/?a=d&d=STT20001030-01.2.56
  134. "Boulder man returns home after scaling Mt. Everest"
    https://www.coloradohistoricnewspapers.org/?a=d&d=RMD19830605-01.2.247
  135. "Cut to the chase: Woody Allen at NCAR"
    https://web.archive.org/web/20120117074634/http://www.ucar.edu/communications/staffnotes/9806/here.html
  136. "About the author"
    http://www.stephenking.com/the_author.html
  137. "Mork and Mindy FAQ"
    http://www.sitcomsonline.com/morkfaq.html
  138. "Mork and Mindy"
    http://www.colorado.com/filmed-colorado/mork-and-mindy-new-york-deli
  139. Daily Camera
    http://www.dailycamera.com/boulder-county-news/ci_17959917
  140. the Guardian
    https://www.theguardian.com/music/2018/nov/22/emmylou-harris-on-her-greatest-hits-i-was-arrogant-enough-to-think-i-could-survive-a-flop
  141. Vanity Fair
    https://www.vanityfair.com/hollywood/2019/03/broad-city-series-finale-ending-abbi-jacobson-ilana-glazer
  142. www.bouldercoloradousa.com
    https://www.bouldercoloradousa.com/film/catch-and-release-movie/
  143. "Get to Know Boulder's 10 Sister Cities"
    https://bouldercolorado.gov/newsroom/boulders-10-sister-cities
  144. "Sister City Plaza"
    https://web.archive.org/web/20150404223606/https://bouldercolorado.gov/sister-cities/sister-city-plaza
  145. "Welcome to Boulder-Dushanbe Sister Cities"
    https://www.boulder-dushanbe.org/
  146. "Mural"
    http://boulder-mante.org/?page_id=227
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