Powell, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Powell, a city in Park County, Wyoming.
Overnight
29°F
Partly Cloudy
Partly cloudy, with a low around 29. North northwest wind around 1 mph.
7-day forecast for Powell
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 29°F | Partly Cloudy | 1 mph NNW | 0% |
| Wednesday | 53°F | Mostly Sunny | 3 mph N | 0% |
| Wednesday Night | 29°F | Partly Cloudy | 1 to 6 mph NNW | 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 SSE | 0% |
| Sunday | 60°F | Mostly Sunny | 3 to 8 mph SSE | 0% |
| Sunday Night | 35°F | Partly Cloudy | 5 mph SW | 0% |
| Monday | 59°F | Mostly Sunny | 3 mph WSW | 0% |
| Monday Night | 34°F | Partly Cloudy | 2 mph S | 1% |
| Tuesday | 61°F | Mostly Sunny | 2 mph S | 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.