Last frost date in St. Peter, Minnesota
May 2
Average last frost in spring. In an early year (1 in 10) it's over by April 19; in a late year (1 in 10) it comes after May 14.
October 4
Average first frost in fall. 1 year in 10 it comes by September 21.
Source: NOAA U.S. Climate Normals 1991–2020, station St Peter (USC00217405), 0.5 miles from St. Peter, elevation 795 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 19 | May 2 | May 14 |
| First frost in fall | Sept 21 | Oct 4 | Oct 16 |
Frost-free days in an average year: 153
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 10 | Sept 27 |
| Frost (32°F) | Every year | May 2 | Oct 4 |
| Hard freeze (28°F) | Every year | Apr 22 | Oct 13 |
Nights at 32°F or colder in an average year: 163
What to plant now in St. Peter
- Spring planting calendar for an average last frost around April 30 St. Peter: May 2
- Fall planting calendar for an average first frost around September 30 St. Peter: October 4
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 Minnesota
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