Thompson Springs, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Thompson Springs, a community in Grand County, Utah.
Overnight
40°F
Mostly Cloudy
Mostly cloudy, with a low around 40. Northeast wind around 5 mph.
7-day forecast for Thompson Springs
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 40°F | Mostly Cloudy | 5 mph NE | 3% |
| Wednesday | 50°F | Chance Rain Showers | 5 to 10 mph W | 37% |
| Wednesday Night | 38°F | Mostly Clear | 5 mph NNW | 12% |
| Thursday | 51°F | Mostly Sunny | 5 mph SE | 0% |
| Thursday Night | 39°F | Mostly Cloudy | 0 to 5 mph NNW | 0% |
| Friday | 54°F | Sunny | 0 to 5 mph W | 1% |
| Friday Night | 38°F | Mostly Clear | 0 to 5 mph NNW | 0% |
| Saturday | 54°F | Sunny | 0 to 5 mph SSE | 0% |
| Saturday Night | 40°F | Mostly Clear | 0 mph | 0% |
| Sunday | 54°F | Sunny | 0 to 5 mph S | 0% |
| Sunday Night | 40°F | Mostly Clear | 0 mph | 0% |
| Monday | 54°F | Mostly Sunny | 0 mph | 1% |
| Monday Night | 41°F | Partly Cloudy | 0 mph | 1% |
| Tuesday | 55°F | Mostly Sunny | 0 mph | 1% |
Forecast source: National Weather Service (api.weather.gov) for Thompson Springs (38.964, -109.704). Updated through the day.
Growing snapshot for Thompson Springs
Last spring frost
Apr 27
First fall frost
Oct 9
Growing season
165 days
Hardiness zone
6b
More local growing data for Thompson Springs: nearby ZIP 84540 weather · frost dates · planting calendar · Utah frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Dewey, Ut (30.3 mi from Thompson Springs). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.