Laramie County · Wyoming
Cheyenne, WY weather averages
NOAA climate normals for 1991-2020, measured at Cheyenne, 1.2 km from the city centre — month by month temperature, rain and snow.
Quick answer
Cheyenne averages a daily high of 58.6°F and a daily low of 34.3°F across the year, with 15.94 inches of precipitation. July is the warmest month at 83.4°F and December the coldest at 17.3°F.
- Average annual high
- 58.6°FWarmest month July
- Average annual low
- 34.3°FColdest month December
- Precipitation per year
- 15.94 inWettest month May
- Snowfall per year
- 60.3 in164.1 days at or below 32°F
Cheyenne weather month by month
Normal daily high and low, precipitation and snowfall for each month, 1991-2020.
| Month | High °F | Low °F | Precip in | Snow in | Range |
|---|---|---|---|---|---|
| January | 39.5 | 18 | 0.33 | 5.9 | 18 to 39.5 degrees |
| February | 40.5 | 18.6 | 0.47 | 7.9 | 18.6 to 40.5 degrees |
| March | 47.5 | 24.4 | 1.05 | 11.3 | 24.4 to 47.5 degrees |
| April | 54.9 | 30.8 | 1.78 | 10.2 | 30.8 to 54.9 degrees |
| May | 64.7 | 40.2 | 2.34 | 2.3 | 40.2 to 64.7 degrees |
| June | 75.3 | 48.9 | 2.34 | 0 | 48.9 to 75.3 degrees |
| July | 83.4 | 55.5 | 2.19 | 0 | 55.5 to 83.4 degrees |
| August | 81.2 | 54.1 | 1.95 | 0 | 54.1 to 81.2 degrees |
| September | 71.8 | 44.7 | 1.48 | 1.3 | 44.7 to 71.8 degrees |
| October | 58.8 | 33.9 | 0.93 | 5 | 33.9 to 58.8 degrees |
| November | 46.5 | 24.2 | 0.59 | 8 | 24.2 to 46.5 degrees |
| December | 38.2 | 17.3 | 0.49 | 8.4 | 17.3 to 38.2 degrees |
Source: NOAA NCEI, U.S. Climate Normals 1991-2020 — station USW00024018, Cheyenne · rates as published for 1991-2020 normals
How to read Cheyenne climate normals
What a climate normal is, and what it is not.
A normal is the average of thirty years of daily observations at one station — here Cheyenne, 1.2 km from the centre of Cheyenne. It describes a typical year, so any single year will run warmer, cooler, wetter or drier. Readings taken at an airport on the edge of town usually sit a degree or two below a dense downtown on summer nights. Cheyenne sees about 10.4 days a year at or above 90°F and about 41 days with a tenth of an inch of precipitation or more.
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Other Cheyenne data on this site.