East Thermopolis, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for East Thermopolis, a town in Hot Springs County, Wyoming.
This Afternoon
69°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Partly sunny. High near 69, with temperatures falling to around 66 in the afternoon. North northwest wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for East Thermopolis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Showers And Thunderstorms Likely | 14 mph NNW | 74% |
| Tonight | 44°F | Showers And Thunderstorms Likely | 3 to 15 mph NNW | 78% |
| Sunday | 65°F | Rain Showers Likely then Slight Chance Showers And Thunderstorms | 2 to 7 mph NNW | 57% |
| Sunday Night | 43°F | Mostly Cloudy | 1 to 6 mph SE | 7% |
| Monday | 72°F | Sunny | 5 mph S | 0% |
| Monday Night | 45°F | Mostly Clear | 3 mph SSE | 0% |
| Tuesday | 79°F | Sunny | 6 mph S | 0% |
| Tuesday Night | 51°F | Slight Chance Showers And Thunderstorms | 5 mph S | 19% |
| Wednesday | 80°F | Mostly Sunny | 6 mph WSW | 13% |
| Wednesday Night | 49°F | Mostly Clear | 5 mph SE | 3% |
| Thursday | 83°F | Sunny | 7 mph S | 0% |
| Thursday Night | 52°F | Mostly Clear | 5 to 9 mph S | 1% |
| Friday | 84°F | Sunny | 9 to 13 mph S | 1% |
| Friday Night | 52°F | Partly Cloudy | 10 mph S | 3% |
Forecast source: National Weather Service (api.weather.gov) for East Thermopolis (43.644, -108.198). Updated through the day.
Growing snapshot for East Thermopolis
Last spring frost
May 24
First fall frost
Sep 16
Growing season
112 days
Hardiness zone
4b
More local growing data for East Thermopolis: nearby ZIP 82430 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Thermopolis 9Ne, Wy (4 mi from East Thermopolis). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.