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| Climate data for Denver (DIA; elev 5414 ft), 1981−2010 normals,[lower-alpha 1] extremes 1872−present[lower-alpha 2] | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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) | 64.7 (18.2) |
66.5 (19.2) |
73.9 (23.3) |
80.8 (27.1) |
87.8 (31.0) |
95.9 (35.5) |
99.2 (37.3) |
96.4 (35.8) |
91.5 (33.1) |
82.7 (28.2) |
73.6 (23.1) |
64.9 (18.3) |
99.9 (37.7) |
| Average high °F (°C) | 44.0 (6.7) |
46.2 (7.9) |
54.4 (12.4) |
61.5 (16.4) |
71.5 (21.9) |
82.4 (28.0) |
89.4 (31.9) |
87.2 (30.7) |
78.5 (25.8) |
65.3 (18.5) |
52.1 (11.2) |
42.8 (6.0) |
64.7 (18.2) |
| Average low °F (°C) | 17.4 (−8.1) |
18.9 (−7.3) |
26.4 (−3.1) |
33.3 (0.7) |
42.7 (5.9) |
52.3 (11.3) |
58.9 (14.9) |
57.9 (14.4) |
48.3 (9.1) |
36.6 (2.6) |
24.5 (−4.2) |
17.1 (−8.3) |
36.3 (2.4) |
| Mean minimum °F (°C) | −3.0 (−19.4) |
−1.3 (−18.5) |
10.4 (−12.0) |
19.7 (−6.8) |
31.0 (−0.6) |
41.6 (5.3) |
50.9 (10.5) |
49.9 (9.9) |
34.4 (1.3) |
21.5 (−5.8) |
5.5 (−14.7) |
−4.5 (−20.3) |
−12.7 (−24.8) |
| 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) | 0.41 (10) |
0.37 (9.4) |
0.92 (23) |
1.71 (43) |
2.12 (54) |
1.98 (50) |
2.16 (55) |
1.69 (43) |
0.96 (24) |
1.02 (26) |
0.61 (15) |
0.35 (8.9) |
14.30 (363) |
| Average snowfall inches (cm) | 7.0 (18) |
5.7 (14) |
10.7 (27) |
6.8 (17) |
1.1 (2.8) |
0 (0) |
0 (0) |
0 (0) |
1.3 (3.3) |
4.0 (10) |
8.7 (22) |
8.5 (22) |
53.8 (137) |
| Average precipitation days (≥ 0.01 in) | 4.1 | 5.3 | 5.9 | 9.1 | 9.4 | 8.4 | 8.3 | 8.6 | 6.5 | 5.3 | 4.7 | 4.1 | 79.7 |
| Average snowy days (≥ 0.1 in) | 5.0 | 5.3 | 5.8 | 4.1 | 0.6 | 0 | 0 | 0 | 0.5 | 1.8 | 4.9 | 5.3 | 33.3 |
| 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 |
| Percent possible sunshine | 72 | 70 | 69 | 69 | 65 | 70 | 71 | 72 | 73 | 72 | 65 | 67 | 70 |
| Source: NOAA (sun, relative humidity and dew point 1961−1990)[1][2][3][4] | |||||||||||||
Notes
- ↑ 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 thread from 1981 to 2010, i.e. Stapleton from January 1981 to February 1995, and DIA from March 1995 to December 2010.
- ↑ Official records for Denver kept at downtown from January 1872 to December 1949, Stapleton Airport from January 1950 to February 1995, and DIA since March 1995. Temperature and precipitation normals are at DIA; snowfall normals at Stapleton are provided since they are unavailable for DIA
References
- ↑ "NowData - NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved 2012-04-01.
- ↑ "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.