| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Record high °F (°C) | 76 (24) |
80 (27) |
84 (29) |
90 (32) |
95 (35) |
105 (41) |
105 (41) |
105 (41) |
101 (38) |
90 (32) |
81 (27) |
79 (26) |
105 (41) |
| Mean maximum °F (°C) | 65.0 (18.3) |
67.1 (19.5) |
74.7 (23.7) |
80.8 (27.1) |
88.3 (31.3) |
96.5 (35.8) |
99.6 (37.6) |
96.9 (36.1) |
92.9 (33.8) |
84.1 (28.9) |
73.6 (23.1) |
65.3 (18.5) |
100.6 (38.1) |
| Mean daily maximum °F (°C) | 44.6 (7.0) |
45.7 (7.6) |
55.7 (13.2) |
61.7 (16.5) |
71.2 (21.8) |
83.4 (28.6) |
89.9 (32.2) |
87.5 (30.8) |
79.6 (26.4) |
65.3 (18.5) |
52.9 (11.6) |
44.0 (6.7) |
65.1 (18.4) |
| Daily mean °F (°C) | 31.7 (−0.2) |
32.7 (0.4) |
41.6 (5.3) |
47.8 (8.8) |
57.4 (14.1) |
68.2 (20.1) |
75.1 (23.9) |
72.9 (22.7) |
64.8 (18.2) |
51.1 (10.6) |
39.4 (4.1) |
31.2 (−0.4) |
51.2 (10.6) |
| Mean daily minimum °F (°C) | 18.7 (−7.4) |
19.7 (−6.8) |
27.5 (−2.5) |
33.9 (1.1) |
43.6 (6.4) |
53.0 (11.7) |
60.2 (15.7) |
58.3 (14.6) |
50.0 (10.0) |
37.0 (2.8) |
26.0 (−3.3) |
18.4 (−7.6) |
37.2 (2.9) |
| Mean minimum °F (°C) | −3.8 (−19.9) |
−1.5 (−18.6) |
9.5 (−12.5) |
19.8 (−6.8) |
30.2 (−1.0) |
41.9 (5.5) |
51.4 (10.8) |
48.8 (9.3) |
35.9 (2.2) |
19.6 (−6.9) |
5.4 (−14.8) |
−3.4 (−19.7) |
−11.0 (−23.9) |
| Record low °F (°C) | −29 (−34) |
−25 (−32) |
−11 (−24) |
−2 (−19) |
19 (−7) |
30 (−1) |
42 (6) |
40 (4) |
17 (−8) |
−2 (−19) |
−18 (−28) |
−25 (−32) |
−29 (−34) |
| Average precipitation inches (mm) | 0.38 (9.7) |
0.41 (10) |
0.86 (22) |
1.68 (43) |
2.16 (55) |
1.94 (49) |
2.14 (54) |
1.58 (40) |
1.35 (34) |
0.99 (25) |
0.64 (16) |
0.35 (8.9) |
14.48 (368) |
| Average snowfall inches (cm) | 6.4 (16) |
7.6 (19) |
8.8 (22) |
6.2 (16) |
1.4 (3.6) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.8 (2.0) |
3.9 (9.9) |
7.3 (19) |
6.6 (17) |
49.0 (124) |
| Average extreme snow depth inches (cm) | 3.8 (9.7) |
4.7 (12) |
4.0 (10) |
2.2 (5.6) |
0.5 (1.3) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.1 (0.25) |
2.0 (5.1) |
4.1 (10) |
5.3 (13) |
9.0 (23) |
| Average precipitation days (≥ 0.01 in) | 4.4 | 5.5 | 6.2 | 9.0 | 10.4 | 8.1 | 8.3 | 7.5 | 6.0 | 5.3 | 4.6 | 4.4 | 79.7 |
| Average snowy days (≥ 0.1 in) | 5.0 | 5.3 | 4.8 | 4.1 | 0.8 | 0.0 | 0.0 | 0.0 | 0.4 | 1.8 | 4.6 | 4.6 | 31.4 |
| Average relative humidity (%) | 55.2 | 55.8 | 53.7 | 49.6 | 51.7 | 49.3 | 47.8 | 49.3 | 50.1 | 49.2 | 56.3 | 56.6 | 52.0 |
| Average dew point °F (°C) | 12.7 (−10.7) |
16.2 (−8.8) |
19.9 (−6.7) |
26.2 (−3.2) |
35.8 (2.1) |
43.5 (6.4) |
48.4 (9.1) |
47.7 (8.7) |
39.6 (4.2) |
28.6 (−1.9) |
21.0 (−6.1) |
14.2 (−9.9) |
29.5 (−1.4) |
| Mean monthly sunshine hours | 215.3 | 211.1 | 255.6 | 276.2 | 290.0 | 315.3 | 325.0 | 306.4 | 272.3 | 249.2 | 194.3 | 195.9 | 3,106.6 |
| 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 |
| Percent possible sunshine | 72 | 70 | 69 | 69 | 65 | 70 | 71 | 72 | 73 | 72 | 65 | 67 | 70 |
| Average ultraviolet index | 2 | 2 | 3 | 3 | 5 | 6 | 6 | 5 | 5 | 3 | 2 | 2 | 4 |
| Source 1: NOAA (sun, relative humidity and dew point 1961−1990)[1][2][3][4][5] | |||||||||||||
| Source 2: Weather Atlas (Daylight-Average UV index)[6] | |||||||||||||
Notes
edit- ^ Mean monthly maxima and minima (i.e. the highest and lowest temperature readings during an entire month or year) calculated based on data at said location from 1991 to 2020.
- ^ The official weather records for Denver were recorded in Downtown Denver from January 1872 to December 1949, at Stapleton International Airport from January 1950 to February 1995, and at Denver International Airport since March 1995.
References
edit- ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved 2012-04-01.
- ^ "Summary of Monthly Normals 1991–2020". National Oceanic and Atmospheric Administration. Retrieved May 6, 2021.
- ^ "Station Name: CO DENVER-STAPLETON". National Oceanic and Atmospheric Administration. Retrieved 2014-03-13.
- ^ "Threaded Climate Extremes for Denver Area, CO". National Weather Service. Retrieved 2012-02-10.
- ^ "WMO Climate Normals for DENVER/STAPLETON INT'L AP CO 1961–1990". National Oceanic and Atmospheric Administration. Retrieved 2020-07-18.
- ^ "Denver, Colorado, USA - Monthly weather forecast and Climate data". Weather Atlas. Archived from the original on February 23, 2020. Retrieved May 8, 2021.