Last frost date in Mahomet, Illinois
April 23
Average last frost in spring. In an early year (1 in 10) it's over by April 9; in a late year (1 in 10) it comes after May 9.
October 13
Average first frost in fall. 1 year in 10 it comes by September 28.
Source: NOAA U.S. Climate Normals 1991–2020, station Champaign 9 SW (USW00054808), 9.5 miles from Mahomet, elevation 700 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 9 | Apr 23 | May 9 |
| First frost in fall | Sept 28 | Oct 13 | Oct 25 |
Frost-free days in an average year: 170
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 4 | Oct 3 |
| Frost (32°F) | Every year | Apr 23 | Oct 13 |
| Hard freeze (28°F) | Every year | Apr 11 | Oct 23 |
Nights at 32°F or colder in an average year: 128
What to plant now in Mahomet
- Spring planting calendar for an average last frost around April 20 Mahomet: April 23
- Fall planting calendar for an average first frost around October 10 Mahomet: October 13
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 Illinois
- Champaign 8 mi · last frost Apr 15
- Rantoul 15 mi · last frost Apr 21
- Bloomington 36 mi · last frost Apr 25
- Decatur 37 mi · last frost Apr 14
- Danville 41 mi · last frost Apr 21
Updated