Last frost date in Owatonna, Minnesota
May 5
Average last frost in spring. In an early year (1 in 10) it's over by April 20; in a late year (1 in 10) it comes after May 20.
October 6
Average first frost in fall. 1 year in 10 it comes by September 23.
Source: NOAA U.S. Climate Normals 1991–2020, station Owatonna (USC00216287), 0.4 miles from Owatonna, elevation 1,140 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 20 | May 5 | May 20 |
| First frost in fall | Sept 23 | Oct 6 | Oct 21 |
Frost-free days in an average year: 154
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 14 | Sept 29 |
| Frost (32°F) | Every year | May 5 | Oct 6 |
| Hard freeze (28°F) | Every year | Apr 25 | Oct 18 |
Nights at 32°F or colder in an average year: 160
What to plant now in Owatonna
- Spring planting calendar for an average last frost around April 30 Owatonna: May 5
- Fall planting calendar for an average first frost around October 10 Owatonna: October 6
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
- Faribault 15 mi · last frost May 5
- Albert Lea 31 mi · last frost Apr 27
- Austin 32 mi · last frost Apr 30
- Mankato 37 mi · last frost Apr 30
- Rochester 38 mi · last frost Apr 30
Updated