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.
Today
54°F
Partly Sunny
Partly sunny. High near 54, with temperatures falling to around 49 in the afternoon. East northeast wind 0 to 5 mph.
7-day forecast for East Thermopolis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 54°F | Partly Sunny | 0 to 5 mph ENE | 0% |
| Tonight | 31°F | Partly Cloudy | 3 mph SE | 0% |
| Thursday | 56°F | Mostly Sunny | 3 to 10 mph S | 0% |
| Thursday Night | 33°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph WSW | 19% |
| Friday | 53°F | Slight Chance Rain Showers then Sunny | 3 mph ESE | 19% |
| Friday Night | 30°F | Mostly Clear | 3 mph S | 0% |
| Saturday | 57°F | Sunny | 3 mph S | 0% |
| Saturday Night | 33°F | Mostly Clear | 3 to 10 mph S | 0% |
| Sunday | 63°F | Sunny | 6 to 10 mph S | 0% |
| Sunday Night | 36°F | Partly Cloudy | 7 mph SSW | 0% |
| Monday | 61°F | Mostly Sunny | 5 mph SSE | 0% |
| Monday Night | 36°F | Partly Cloudy | 6 mph S | 0% |
| Tuesday | 62°F | Mostly Sunny | 5 mph S | 0% |
| Tuesday Night | 36°F | Partly Cloudy | 2 to 6 mph SSW | 1% |
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 Nov 4, 2026.