Annual mean 9°C · wettest around May · prevailing wind W
Warmest
28.6 °C
Coldest
1.1 °C
Wettest
43%
Windiest
7.4 m/s
Prevailing
W
5.9 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Cheyenne over the whole year is 9°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -5°C. The rainy (wet) season in Cheyenne runs from March to October, peaking in May with a 39% chance of rain on a given day. The dry season is November to February; December is the driest month, at 15%. Winds in Cheyenne are highest in February, averaging 5.5 m/s (20 km/h), and lightest in August, at 3.7 m/s (13 km/h). The prevailing wind is from the W. The clearest skies in Cheyenne come in September, when the sky is typically 15% covered; May is the cloudiest month, at 28%.
Month by month Cheyenne climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
2°C
-5°C
-6°C
15%
21%
5.0 m/s
0
0
4
February
2°C
-5°C
-6°C
17%
20%
5.5 m/s
0
0
7
March
8°C
-2°C
-0°C
30%
24%
5.1 m/s
2
0
20
April
11°C
1°C
4°C
30%
24%
5.3 m/s
10
0
37
May
16°C
7°C
11°C
39%
28%
4.6 m/s
32
1
59
June
25°C
14°C
20°C
34%
18%
4.2 m/s
71
23
58
July
28°C
17°C
24°C
31%
16%
3.8 m/s
70
50
34
August
27°C
15°C
23°C
33%
16%
3.7 m/s
74
39
45
September
24°C
10°C
18°C
32%
15%
3.9 m/s
67
16
63
October
15°C
4°C
8°C
28%
17%
4.4 m/s
25
0
54
November
9°C
-1°C
1°C
23%
18%
4.7 m/s
3
0
26
December
4°C
-3°C
-5°C
15%
19%
5.5 m/s
0
0
8
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Cheyenne weather by season
Year round, Cheyenne has days of about 2°C at their warmest in January, its coolest month, and 28°C in July, its warmest; the coolest hours of the day run from -5°C to 17°C through the year, and the average temperature over the year is 9°C around the clock. Rain is most likely around May and least likely around December. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Cheyenne weather in winterDecember to February
High 3°CLow -5°CRain 16%
Winter in Cheyenne has typical daily highs of about 3°C and lows of about -5°C, with a 16% chance of rain on a given day.
Cheyenne weather in springMarch to May
High 12°CLow 2°CRain 33%
Spring in Cheyenne has typical daily highs of about 12°C and lows of about 2°C, with a 33% chance of rain on a given day.
Cheyenne weather in summerJune to August
High 27°CLow 15°CRain 33%
Summer in Cheyenne has typical daily highs of about 27°C and lows of about 15°C, with a 33% chance of rain on a given day.
Cheyenne weather in autumnSeptember to November
High 16°CLow 4°CRain 28%
Autumn in Cheyenne has typical daily highs of about 16°C and lows of about 4°C, with a 28% chance of rain on a given day.
When is the rainy season in Cheyenne?
The rainy (wet) season in Cheyenne runs from March to October, peaking in May with a 39% chance of rain on a given day. The dry season is November to February; December is the driest month, at 15%.
What time of year is Cheyenne windiest?
Winds in Cheyenne are highest in February, averaging 5.5 m/s (20 km/h), and lightest in August, at 3.7 m/s (13 km/h). The prevailing wind is from the W.
What is the average temperature in Cheyenne year round?
The average temperature in Cheyenne over the whole year is 9°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -5°C.