Powder River, WY Weather & Growing Conditions
Overnight
32°F
Mostly Cloudy
Mostly cloudy, with a low around 32. West northwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 32°F | Mostly Cloudy | 6 mph WNW | 0% |
| Wednesday | 49°F | Mostly Cloudy | 5 to 9 mph NNE | 0% |
| Wednesday Night | 30°F | Mostly Cloudy | 1 to 6 mph ENE | 0% |
| Thursday | 53°F | Mostly Sunny | 7 to 14 mph SW | 0% |
| Thursday Night | 31°F | Mostly Cloudy | 8 mph SW | 2% |
| Friday | 48°F | Sunny | 6 to 10 mph W | 5% |
| Friday Night | 30°F | Mostly Clear | 6 to 10 mph WSW | 0% |
| Saturday | 53°F | Sunny | 6 to 10 mph WSW | 0% |
| Saturday Night | 33°F | Mostly Clear | 6 to 15 mph SW | 0% |
| Sunday | 59°F | Sunny | 15 to 21 mph SW | 0% |
| Sunday Night | 36°F | Partly Cloudy | 12 to 16 mph SW | 0% |
| Monday | 58°F | Mostly Sunny | 8 to 12 mph SW | 0% |
| Monday Night | 36°F | Partly Cloudy | 8 to 12 mph SSW | 0% |
| Tuesday | 58°F | Mostly Sunny | 7 to 14 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Powder River, WY
Last spring frost
May 30
First fall frost
Sep 22
Growing season
115 days
Hardiness zone
5a
Explore more for Powder River, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Powder Rvr (School), Wy (13.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.