Last frost date in Mattoon, Illinois
April 11
Average last frost in spring. In an early year (1 in 10) it's over by March 31; in a late year (1 in 10) it comes after April 28.
October 29
Average first frost in fall. 1 year in 10 it comes by October 15.
Source: NOAA U.S. Climate Normals 1991–2020, station Mattoon (USC00115430), 0.6 miles from Mattoon, elevation 701 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Mar 31 | Apr 11 | Apr 28 |
| First frost in fall | Oct 15 | Oct 29 | Nov 9 |
Frost-free days in an average year: 199
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 23 | Oct 19 |
| Frost (32°F) | Every year | Apr 11 | Oct 29 |
| Hard freeze (28°F) | Every year | Apr 2 | Nov 7 |
Nights at 32°F or colder in an average year: 108
What to plant now in Mattoon
- Corn saladSept 15 – Nov 1Now
- Upland cressSept 15 – Nov 1Now
- Rhubarb plantsNov 1 – Dec 1Soon
- Asparagus plantsNov 15 – Jan 1Soon
- Spring planting calendar for an average last frost around April 10 Mattoon: April 11
- Fall planting calendar for an average first frost around October 30 Mattoon: October 29
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
- Charleston 10 mi · last frost Apr 15
- Effingham 27 mi · last frost Apr 13
- Decatur 40 mi · last frost Apr 14
- Champaign 44 mi · last frost Apr 15
- Mahomet 49 mi · last frost Apr 23
Updated