Cheyenne, WY Weather & Growing Conditions
Tonight
29°F
Mostly Clear
Mostly clear, with a low around 29. West northwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 29°F | Mostly Clear | 5 to 10 mph WNW | 1% |
| Wednesday | 51°F | Partly Sunny | 5 to 10 mph NNW | 5% |
| Wednesday Night | 31°F | Mostly Cloudy | 10 mph NNW | 0% |
| Thursday | 56°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Thursday Night | 31°F | Partly Cloudy | 5 mph WSW | 1% |
| Friday | 56°F | Mostly Sunny | 5 to 10 mph NNW | 4% |
| Friday Night | 31°F | Mostly Clear | 5 to 10 mph WNW | 4% |
| Saturday | 57°F | Sunny | 5 to 10 mph WNW | 2% |
| Saturday Night | 32°F | Mostly Clear | 5 to 10 mph WNW | 1% |
| Sunday | 64°F | Sunny | 5 to 10 mph WSW | 0% |
| Sunday Night | 40°F | Mostly Clear | 10 to 15 mph W | 0% |
| Monday | 64°F | Mostly Sunny | 5 to 10 mph NNW | 0% |
| Monday Night | 37°F | Partly Cloudy | 5 to 10 mph SW | 0% |
| Tuesday | 63°F | Mostly Sunny | 10 to 15 mph WNW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cheyenne, WY
Last spring frost
May 21
First fall frost
Sep 24
Growing season
124 days
Hardiness zone
5b
Explore more for Cheyenne, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Archer, Wy (4.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.