Frost dates for Saint George, Utah
In a typical year, Saint George’s last spring frost lands around Mar 14 and the first fall frost around Nov 10, a growing season of about 241 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 8b.
Right now the growing season is open, with about 16 days until the typical first fall frost.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Feb 27 | Oct 27 |
| 50 percent | Mar 14 | Nov 10 |
| 90 percent | Apr 6 | Nov 22 |
A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.
Soil in Saint George is typically around 61°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in Saint George
- Garlic (Music)
Timing comes from the same temperature engine the app uses, run against Saint George’s normals for today.
Common questions
When is the last frost in Saint George, Utah?
Saint George’s last spring frost falls around March 14 in a typical year. One year in ten it is done by February 27, and one year in ten frost holds on until April 6. Frost-sensitive planting usually waits for the late side of that band.
When is the first fall frost in Saint George?
The first fall frost arrives around November 10 in a typical year, as early as October 27 in an early year and as late as November 22 in a late one.
How long is the growing season in Saint George?
About 241 days, counted between the typical last spring frost and the typical first fall frost.
What USDA zone is Saint George in?
Saint George is in USDA hardiness zone 8b under the 2023 USDA Plant Hardiness Zone Map.
Dates come from 30-year NOAA climate normals for the nearest reporting station. They describe odds, not a forecast.
Nearby cities
- Mesquite, NV (around Mar 16 to Nov 13)
- North Las Vegas, NV (around Feb 1 to Dec 8)
- Las Vegas, NV (around Feb 1 to Dec 8)
- Henderson, NV (around Jan 21 to Dec 17)
- Kingman, AZ (around Apr 2 to Nov 11)
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