Last frost date in Willmar, Minnesota
April 30
Average last frost in spring. In an early year (1 in 10) it's over by April 16; in a late year (1 in 10) it comes after May 13.
October 7
Average first frost in fall. 1 year in 10 it comes by September 23.
Source: NOAA U.S. Climate Normals 1991–2020, station Willmar Wwtp (USC00219004), 1.4 miles from Willmar, elevation 1,100 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 16 | Apr 30 | May 13 |
| First frost in fall | Sept 23 | Oct 7 | Oct 21 |
Frost-free days in an average year: 159
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 9 | Sept 29 |
| Frost (32°F) | Every year | Apr 30 | Oct 7 |
| Hard freeze (28°F) | Every year | Apr 19 | Oct 19 |
Nights at 32°F or colder in an average year: 166
What to plant now in Willmar
- Spring planting calendar for an average last frost around April 30 Willmar: April 30
- Fall planting calendar for an average first frost around October 10 Willmar: October 7
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
- Hutchinson 37 mi · last frost Apr 28
- St. Cloud 51 mi · last frost May 7
- Sartell 54 mi · last frost May 3
- Alexandria 54 mi · last frost May 2
- Marshall 59 mi · last frost May 5
Updated