Last frost date in Sussex, Wisconsin
April 30
Average last frost in spring. In an early year (1 in 10) it's over by April 16; in a late year (1 in 10) it comes after May 16.
October 16
Average first frost in fall. 1 year in 10 it comes by October 1.
Source: NOAA U.S. Climate Normals 1991–2020, station Richfield 3 Ssw (USC00477148), 5.3 miles from Sussex, elevation 984 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Lisbon and Richfield, so their frost dates are the same as Sussex's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 16 | Apr 30 | May 16 |
| First frost in fall | Oct 1 | Oct 16 | Oct 29 |
Frost-free days in an average year: 167
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 12 | Oct 4 |
| Frost (32°F) | Every year | Apr 30 | Oct 16 |
| Hard freeze (28°F) | Every year | Apr 19 | Oct 27 |
Nights at 32°F or colder in an average year: 153
What to plant now in Sussex
- Spring planting calendar for an average last frost around April 30 Sussex: April 30
- Fall planting calendar for an average first frost around October 20 Sussex: October 16
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
- Menomonee Falls 6 mi · last frost May 6
- Brookfield 7 mi · last frost Apr 30
- Waukesha 9 mi · last frost May 1
- New Berlin 12 mi · last frost May 3
- West Allis 13 mi · last frost Apr 26
Updated