Thompson Springs, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Thompson Springs, a community in Grand County, Utah.
Tonight
52°F
Mostly Clear
Mostly clear, with a low around 52. North northwest wind 5 to 10 mph.
7-day forecast for Thompson Springs
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Clear | 5 to 10 mph NNW | 5% |
| Sunday | 73°F | Sunny | 0 to 10 mph WSW | 0% |
| Sunday Night | 53°F | Mostly Clear | 5 to 10 mph N | 0% |
| Monday | 77°F | Mostly Sunny | 5 to 10 mph ESE | 0% |
| Monday Night | 57°F | Partly Cloudy | 5 to 10 mph NNE | 6% |
| Tuesday | 74°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph SE | 24% |
| Tuesday Night | 55°F | Showers And Thunderstorms Likely | 5 to 10 mph E | 70% |
| Wednesday | 73°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 mph ESE | 22% |
| Wednesday Night | 56°F | Mostly Clear | 5 mph N | 6% |
| Thursday | 75°F | Mostly Sunny | 5 mph ESE | 7% |
| Thursday Night | 58°F | Partly Cloudy then Slight Chance Rain Showers | 0 to 5 mph NNE | 21% |
| Friday | 73°F | Chance Rain Showers | 5 mph E | 37% |
| Friday Night | 57°F | Chance Showers And Thunderstorms | 0 to 5 mph ENE | 30% |
| Saturday | 75°F | Chance Rain Showers | 5 mph SSE | 29% |
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 Sep 20, 2026.