St. George, UT Weather & Growing Conditions
Tonight
44°F
Mostly Clear
Mostly clear, with a low around 44. East wind 0 to 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 44°F | Mostly Clear | 0 to 3 mph E | 2% |
| Wednesday | 62°F | Sunny | 0 to 6 mph WSW | 2% |
| Wednesday Night | 42°F | Mostly Clear | 3 mph NNE | 0% |
| Thursday | 61°F | Mostly Sunny | 1 mph NE | 0% |
| Thursday Night | 43°F | Mostly Clear | 1 mph NNE | 0% |
| Friday | 64°F | Sunny | 1 mph NNE | 0% |
| Friday Night | 43°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Saturday | 66°F | Sunny | 2 mph NNE | 0% |
| Saturday Night | 45°F | Clear | 0 to 3 mph ENE | 0% |
| Sunday | 69°F | Sunny | 2 mph ENE | 0% |
| Sunday Night | 47°F | Partly Cloudy | 0 to 3 mph ENE | 0% |
| Monday | 68°F | Mostly Sunny | 2 mph ENE | 2% |
| Monday Night | 49°F | Partly Cloudy | 0 mph | 1% |
| Tuesday | 68°F | Mostly Sunny | 0 mph | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. George, UT
Last spring frost
Mar 14
First fall frost
Nov 10
Growing season
239 days
Hardiness zone
8b
Explore more for St. George, UT: full frost dates · planting calendar · Utah frost dates
Climate data from the nearest NOAA station, St George, Ut (5.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.