Powder River, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Powder River, a community in Natrona County, Wyoming.
This Afternoon
71°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 71. West wind around 8 mph. Chance of precipitation is 50%.
7-day forecast for Powder River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Chance Showers And Thunderstorms | 8 mph W | 45% |
| Tonight | 43°F | Showers And Thunderstorms Likely | 6 to 12 mph NW | 68% |
| Sunday | 62°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 12 to 15 mph W | 51% |
| Sunday Night | 39°F | Mostly Cloudy | 2 to 10 mph NW | 7% |
| Monday | 68°F | Mostly Sunny | 5 mph SSW | 0% |
| Monday Night | 40°F | Mostly Clear | 2 to 6 mph NE | 0% |
| Tuesday | 76°F | Sunny | 3 to 9 mph SW | 1% |
| Tuesday Night | 47°F | Slight Chance Showers And Thunderstorms | 6 mph SSW | 19% |
| Wednesday | 76°F | Mostly Sunny | 12 to 18 mph WSW | 8% |
| Wednesday Night | 45°F | Mostly Clear | 8 mph WSW | 3% |
| Thursday | 79°F | Sunny | 10 mph WSW | 1% |
| Thursday Night | 47°F | Mostly Clear | 6 mph SSE | 1% |
| Friday | 80°F | Mostly Sunny | 7 to 13 mph SSW | 2% |
| Friday Night | 49°F | Partly Cloudy | 12 mph SSW | 6% |
Forecast source: National Weather Service (api.weather.gov) for Powder River (43.052, -106.991). Updated through the day.
Growing snapshot for Powder River
Last spring frost
May 23
First fall frost
Sep 20
Growing season
121 days
Hardiness zone
5a
More local growing data for Powder River: nearby ZIP 82648 weather · frost dates · planting calendar · Wyoming frost dates
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Midwest
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Vista West
Climate data from the nearest NOAA station, Powder River #2, Wy (5.7 mi from Powder River). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.