Powder River, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Powder River, a community in Natrona County, Wyoming.
Tonight
30°F
Mostly Clear
Mostly clear, with a low around 30. West southwest wind around 7 mph.
7-day forecast for Powder River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 30°F | Mostly Clear | 7 mph WSW | 0% |
| Wednesday | 51°F | Partly Sunny | 5 to 8 mph NW | 0% |
| Wednesday Night | 29°F | Mostly Cloudy | 3 to 8 mph WNW | 0% |
| Thursday | 55°F | Mostly Sunny | 7 to 13 mph SW | 0% |
| Thursday Night | 30°F | Mostly Cloudy | 8 mph WSW | 1% |
| Friday | 51°F | Sunny | 7 to 10 mph W | 4% |
| Friday Night | 29°F | Mostly Clear | 7 to 10 mph WSW | 0% |
| Saturday | 55°F | Sunny | 6 to 10 mph WSW | 0% |
| Saturday Night | 31°F | Mostly Clear | 6 to 12 mph SW | 0% |
| Sunday | 61°F | Sunny | 12 to 21 mph SW | 0% |
| Sunday Night | 35°F | Partly Cloudy | 9 to 14 mph SW | 0% |
| Monday | 59°F | Mostly Sunny | 7 to 10 mph WSW | 0% |
| Monday Night | 34°F | Partly Cloudy | 7 to 12 mph W | 0% |
| Tuesday | 61°F | Mostly Sunny | 8 to 15 mph WSW | 0% |
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
Nearby towns & communities
Alcova
Antelope Hills
Bar Nunn
Bessemer Bend
Brookhurst
Casper
Casper Mountain
Edgerton
Evansville
Hartrandt
Homa Hills
Meadow Acres
Midwest
Mills
Mountain View
Red Butte
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 Nov 4, 2026.