Last frost date in Whitewater, Wisconsin
May 2
Average last frost in spring. In an early year (1 in 10) it's over by April 18; in a late year (1 in 10) it comes after May 20.
October 9
Average first frost in fall. 1 year in 10 it comes by September 25.
Source: NOAA U.S. Climate Normals 1991–2020, station Whitewater (USC00479190), 1 miles from Whitewater, elevation 875 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 18 | May 2 | May 20 |
| First frost in fall | Sept 25 | Oct 9 | Oct 24 |
Frost-free days in an average year: 157
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 16 | Sept 30 |
| Frost (32°F) | Every year | May 2 | Oct 9 |
| Hard freeze (28°F) | Every year | Apr 20 | Oct 22 |
Nights at 32°F or colder in an average year: 152
What to plant now in Whitewater
- Spring planting calendar for an average last frost around April 30 Whitewater: May 2
- Fall planting calendar for an average first frost around October 10 Whitewater: 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
- Fort Atkinson 8 mi · last frost Apr 28
- Elkhorn 15 mi · last frost Apr 28
- Janesville 18 mi · last frost Apr 26
- Oconomowoc 22 mi · last frost Apr 30
- Watertown 24 mi · last frost Apr 28
Updated