Grantsville, UT Weather & Growing Conditions
Today
64°F
Sunny
Sunny, with a high near 64. Northwest wind 3 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Sunny | 3 to 8 mph NW | 1% |
| Tonight | 45°F | Mostly Clear | 3 to 9 mph N | 3% |
| Sunday | 67°F | Sunny | 3 to 8 mph NE | 0% |
| Sunday Night | 47°F | Partly Cloudy | 5 to 9 mph ENE | 0% |
| Monday | 71°F | Mostly Sunny | 5 mph NE | 0% |
| Monday Night | 53°F | Mostly Cloudy | 7 mph ENE | 7% |
| Tuesday | 69°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph S | 21% |
| Tuesday Night | 51°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 mph ESE | 19% |
| Wednesday | 72°F | Sunny | 6 mph SSW | 5% |
| Wednesday Night | 53°F | Mostly Clear | 6 mph E | 1% |
| Thursday | 75°F | Sunny | 2 to 6 mph S | 0% |
| Thursday Night | 56°F | Partly Cloudy | 8 mph SE | 1% |
| Friday | 76°F | Mostly Sunny | 9 to 13 mph S | 6% |
| Friday Night | 57°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 9 to 14 mph S | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Grantsville, UT
Last spring frost
May 2
First fall frost
Oct 14
Growing season
164 days
Hardiness zone
7a
Explore more for Grantsville, UT: full frost dates · planting calendar · Utah frost dates
Climate data from the nearest NOAA station, Grantsville 2W, Ut (23.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.