Powder River, WY Weather & Growing Conditions
This Afternoon
69°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 69. West northwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Chance Showers And Thunderstorms | 10 mph WNW | 37% |
| Tonight | 44°F | Showers And Thunderstorms Likely | 7 to 14 mph NW | 73% |
| Sunday | 59°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 13 to 16 mph WNW | 53% |
| Sunday Night | 41°F | Mostly Cloudy | 3 to 12 mph WNW | 4% |
| Monday | 66°F | Mostly Sunny | 5 mph SW | 0% |
| Monday Night | 43°F | Mostly Clear | 3 to 7 mph ESE | 0% |
| Tuesday | 74°F | Sunny | 3 to 9 mph SW | 1% |
| Tuesday Night | 49°F | Slight Chance Showers And Thunderstorms | 7 mph SSW | 24% |
| Wednesday | 74°F | Mostly Sunny | 14 to 18 mph WSW | 8% |
| Wednesday Night | 48°F | Mostly Clear | 7 mph WSW | 2% |
| Thursday | 77°F | Sunny | 10 mph WSW | 1% |
| Thursday Night | 49°F | Mostly Clear | 6 mph SE | 1% |
| Friday | 78°F | Mostly Sunny | 8 to 13 mph S | 2% |
| Friday Night | 50°F | Partly Cloudy | 13 mph SSW | 6% |
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 Sep 19, 2026.