Cowley, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cowley, a town in Big Horn County, Wyoming.
Tonight
47°F
Rain Showers Likely
Rain showers likely. Mostly cloudy, with a low around 47. Northwest wind 13 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
7-day forecast for Cowley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Rain Showers Likely | 13 to 17 mph NW | 37% |
| Sunday | 65°F | Rain Showers Likely then Slight Chance Showers And Thunderstorms | 5 to 12 mph NNW | 28% |
| Sunday Night | 45°F | Mostly Cloudy | 0 to 6 mph NW | 8% |
| Monday | 70°F | Mostly Sunny | 0 to 5 mph SE | 0% |
| Monday Night | 46°F | Mostly Clear | 3 mph ESE | 0% |
| Tuesday | 77°F | Sunny | 2 to 6 mph SE | 0% |
| Tuesday Night | 51°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 3 mph N | 15% |
| Wednesday | 78°F | Slight Chance Rain Showers then Mostly Sunny | 3 mph SSE | 15% |
| Wednesday Night | 50°F | Mostly Clear | 3 mph SE | 2% |
| Thursday | 81°F | Sunny | 3 to 9 mph SE | 1% |
| Thursday Night | 52°F | Mostly Clear | 7 mph SE | 1% |
| Friday | 82°F | Sunny | 5 to 8 mph SE | 1% |
| Friday Night | 51°F | Partly Cloudy | 8 mph SE | 6% |
| Saturday | 77°F | Mostly Sunny | 7 mph ESE | 10% |
Forecast source: National Weather Service (api.weather.gov) for Cowley (44.883, -108.469). Updated through the day.
Growing snapshot for Cowley
Last spring frost
May 9
First fall frost
Sep 29
Growing season
142 days
Hardiness zone
5a
More local growing data for Cowley: nearby ZIP 82420 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Lovell, Wy (6.3 mi from Cowley). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.