Last frost date in River Falls, Wisconsin
May 11
Average last frost in spring. In an early year (1 in 10) it's over by April 26; in a late year (1 in 10) it comes after May 26.
October 1
Average first frost in fall. 1 year in 10 it comes by September 19.
Source: NOAA U.S. Climate Normals 1991–2020, station River Falls (USC00477226), 0.8 miles from River Falls, elevation 940 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 26 | May 11 | May 26 |
| First frost in fall | Sept 19 | Oct 1 | Oct 15 |
Frost-free days in an average year: 143
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 23 | Sept 24 |
| Frost (32°F) | Every year | May 11 | Oct 1 |
| Hard freeze (28°F) | Every year | May 1 | Oct 11 |
Nights at 32°F or colder in an average year: 170
What to plant now in River Falls
- Spring planting calendar for an average last frost around May 10 River Falls: May 11
- Fall planting calendar for an average first frost around September 30 River Falls: October 1
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 Wisconsin
- Hudson 9 mi · last frost Apr 22
- Menomonie 35 mi · last frost May 9
- Eau Claire 55 mi · last frost Apr 24
- Chippewa Falls 61 mi · last frost May 8
- Onalaska 97 mi · last frost Apr 23
Updated