Last frost date in Superior, Wisconsin
May 6
Average last frost in spring. In an early year (1 in 10) it's over by April 24; in a late year (1 in 10) it comes after May 25.
October 9
Average first frost in fall. 1 year in 10 it comes by September 24.
Source: NOAA U.S. Climate Normals 1991–2020, station Superior (USC00478349), 2.4 miles from Superior, elevation 607 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 24 | May 6 | May 25 |
| First frost in fall | Sept 24 | Oct 9 | Oct 24 |
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 21 | Sept 28 |
| Frost (32°F) | Every year | May 6 | Oct 9 |
| Hard freeze (28°F) | Every year | Apr 24 | Oct 24 |
Nights at 32°F or colder in an average year: 161
What to plant now in Superior
- Spring planting calendar for an average last frost around May 10 Superior: May 6
- Fall planting calendar for an average first frost around October 10 Superior: October 9
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 123 mi · last frost Apr 22
- Menomonie 125 mi · last frost May 9
- Chippewa Falls 126 mi · last frost May 8
- River Falls 129 mi · last frost May 11
- Eau Claire 133 mi · last frost Apr 24
Updated