Last frost date in Grantsville, Utah
May 2
Average last frost in spring. In an early year (1 in 10) it's over by April 17; in a late year (1 in 10) it comes after May 19.
October 14
Average first frost in fall. 1 year in 10 it comes by September 30.
Source: NOAA U.S. Climate Normals 1991–2020, station Grantsville 2W (USC00423348), 2.1 miles from Grantsville, elevation 4,550 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 17 | May 2 | May 19 |
| First frost in fall | Sept 30 | Oct 14 | Oct 27 |
Frost-free days in an average year: 164
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 16 | Oct 4 |
| Frost (32°F) | Every year | May 2 | Oct 14 |
| Hard freeze (28°F) | Every year | Apr 17 | Oct 25 |
Nights at 32°F or colder in an average year: 142
What to plant now in Grantsville
- Spring planting calendar for an average last frost around April 30 Grantsville: May 2
- Fall planting calendar for an average first frost around October 10 Grantsville: October 14
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. How we match the table.
Nearby in Utah
- Tooele 10 mi · last frost May 2
- Magna metro 18 mi · last frost Apr 3
- West Jordan 25 mi · last frost Apr 18
- West Valley City 25 mi · last frost Apr 8
- Salt Lake City 30 mi · last frost Mar 31
Updated