Powell, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Powell, a city in Park County, Wyoming.
Tonight
53°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and 11pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Northwest wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Powell
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Chance Showers And Thunderstorms | 9 to 14 mph NW | 42% |
| Saturday | 63°F | Chance Showers And Thunderstorms | 9 to 21 mph NNW | 58% |
| Saturday Night | 47°F | Showers And Thunderstorms Likely | 8 to 20 mph NNW | 70% |
| Sunday | 63°F | Chance Rain Showers | 7 mph NW | 45% |
| Sunday Night | 45°F | Mostly Cloudy | 0 to 7 mph W | 4% |
| Monday | 70°F | Mostly Sunny | 0 to 7 mph SE | 0% |
| Monday Night | 48°F | Mostly Clear | 3 mph S | 1% |
| Tuesday | 75°F | Sunny | 3 mph S | 0% |
| Tuesday Night | 50°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 3 mph S | 12% |
| Wednesday | 77°F | Sunny | 3 mph SSE | 6% |
| Wednesday Night | 50°F | Mostly Clear | 3 mph S | 3% |
| Thursday | 78°F | Sunny | 2 to 6 mph SSE | 3% |
| Thursday Night | 50°F | Partly Cloudy | 2 to 6 mph S | 2% |
| Friday | 79°F | Mostly Sunny | 2 to 6 mph SSE | 3% |
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 Sep 19, 2026.