Last frost date in Cottage Grove, Minnesota
April 23
Average last frost in spring. In an early year (1 in 10) it's over by April 8; in a late year (1 in 10) it comes after May 7.
October 19
Average first frost in fall. 1 year in 10 it comes by October 5.
Source: NOAA U.S. Climate Normals 1991–2020, station Hastings Dam 2 (USC00213567), 4.3 miles from Cottage Grove, elevation 680 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Hastings, so its frost dates are the same as Cottage Grove's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 8 | Apr 23 | May 7 |
| First frost in fall | Oct 5 | Oct 19 | Nov 1 |
Frost-free days in an average year: 177
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 4 | Oct 8 |
| Frost (32°F) | Every year | Apr 23 | Oct 19 |
| Hard freeze (28°F) | Every year | Apr 11 | Oct 30 |
Nights at 32°F or colder in an average year: 150
What to plant now in Cottage Grove
- Spring planting calendar for an average last frost around April 20 Cottage Grove: April 23
- Fall planting calendar for an average first frost around October 20 Cottage Grove: October 19
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
- Woodbury 6 mi · last frost Apr 26
- Mendota Heights 12 mi · last frost Apr 25
- St. Paul 13 mi · last frost Apr 24
- Apple Valley 15 mi · last frost May 2
- Maplewood 15 mi · last frost Apr 23
Updated