Powder River, WY Weather & Growing Conditions
Today
52°F
Partly Sunny
Partly sunny. High near 52, with temperatures falling to around 45 in the afternoon. North northeast wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 52°F | Partly Sunny | 5 to 10 mph NNE | 0% |
| Tonight | 29°F | Partly Cloudy | 3 to 8 mph W | 0% |
| Thursday | 55°F | Sunny | 8 to 14 mph SW | 0% |
| Thursday Night | 30°F | Mostly Cloudy | 8 mph WSW | 1% |
| Friday | 51°F | Sunny | 7 to 12 mph W | 4% |
| Friday Night | 29°F | Mostly Clear | 8 to 12 mph WSW | 0% |
| Saturday | 55°F | Sunny | 7 to 12 mph WSW | 0% |
| Saturday Night | 31°F | Mostly Clear | 7 to 14 mph SW | 0% |
| Sunday | 61°F | Sunny | 14 to 21 mph SW | 0% |
| Sunday Night | 34°F | Partly Cloudy | 10 to 15 mph SW | 0% |
| Monday | 60°F | Mostly Sunny | 7 to 10 mph W | 0% |
| Monday Night | 34°F | Partly Cloudy | 7 to 13 mph W | 0% |
| Tuesday | 61°F | Mostly Sunny | 8 to 15 mph WSW | 0% |
| Tuesday Night | 35°F | Partly Cloudy | 8 to 12 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 23
First fall frost
Sep 20
Growing season
121 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 River #2, Wy (5.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.