Powell, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Powell, a city in Park County, Wyoming.
Tonight
29°F
Mostly Clear then Patchy Fog
Patchy fog after midnight. Mostly clear, with a low around 29. East northeast wind around 3 mph.
7-day forecast for Powell
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 29°F | Mostly Clear then Patchy Fog | 3 mph ENE | 0% |
| Wednesday | 51°F | Patchy Fog then Mostly Sunny | 2 mph NNE | 0% |
| Wednesday Night | 29°F | Partly Cloudy | 3 mph SW | 0% |
| Thursday | 53°F | Mostly Sunny | 1 to 6 mph SE | 1% |
| Thursday Night | 33°F | Mostly Cloudy | 1 to 7 mph NW | 10% |
| Friday | 54°F | Sunny | 3 to 7 mph SW | 2% |
| Friday Night | 31°F | Partly Cloudy | 5 mph S | 0% |
| Saturday | 56°F | Sunny | 1 to 6 mph SSE | 0% |
| Saturday Night | 32°F | Mostly Clear | 3 mph SE | 0% |
| Sunday | 60°F | Mostly Sunny | 3 to 8 mph SSE | 0% |
| Sunday Night | 35°F | Partly Cloudy | 3 mph WSW | 0% |
| Monday | 59°F | Mostly Sunny | 3 mph WSW | 0% |
| Monday Night | 34°F | Mostly Cloudy | 2 mph S | 1% |
| Tuesday | 61°F | Mostly Sunny | 2 mph SSE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Powell (44.762, -108.758). Updated through the day.
Growing snapshot for Powell
Last spring frost
May 15
First fall frost
Sep 25
Growing season
132 days
Hardiness zone
5a
More local growing data for Powell: nearby ZIP 82440 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Heart Mtn, Wy (4.4 mi from Powell). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.