Last frost date in Rexburg, Idaho
May 12
Average last frost in spring. In an early year (1 in 10) it's over by April 29; in a late year (1 in 10) it comes after June 2.
September 24
Average first frost in fall. 1 year in 10 it comes by September 6.
Source: NOAA U.S. Climate Normals 1991–2020, station Rexburg Byu Idaho (USC00107644), 1 miles from Rexburg, elevation 5,005 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 29 | May 12 | June 2 |
| First frost in fall | Sept 6 | Sept 24 | Oct 8 |
Frost-free days in an average year: 132
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | June 4 | Sept 11 |
| Frost (32°F) | Every year | May 12 | Sept 24 |
| Hard freeze (28°F) | Every year | Apr 30 | Oct 7 |
Nights at 32°F or colder in an average year: 184
What to plant now in Rexburg
- Spring planting calendar for an average last frost around May 10 Rexburg: May 12
- Fall planting calendar for an average first frost around September 20 Rexburg: September 24
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 Idaho
- Idaho Falls 26 mi · last frost May 9
- Blackfoot 52 mi · last frost May 5
- Chubbuck 70 mi · last frost May 16
- Pocatello 74 mi · last frost May 2
- Burley 134 mi · last frost May 7
Updated