Last frost date in Macomb, Illinois
April 17
Average last frost in spring. In an early year (1 in 10) it's over by April 4; in a late year (1 in 10) it comes after May 2.
October 22
Average first frost in fall. 1 year in 10 it comes by October 7.
Source: NOAA U.S. Climate Normals 1991–2020, station Prairie City 2S (USC00116970), 14.2 miles from Macomb, elevation 650 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 4 | Apr 17 | May 2 |
| First frost in fall | Oct 7 | Oct 22 | Nov 1 |
Frost-free days in an average year: 185
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 28 | Oct 12 |
| Frost (32°F) | Every year | Apr 17 | Oct 22 |
| Hard freeze (28°F) | Every year | Apr 7 | Oct 30 |
Nights at 32°F or colder in an average year: 127
What to plant now in Macomb
- Spring planting calendar for an average last frost around April 20 Macomb: April 17
- Fall planting calendar for an average first frost around October 20 Macomb: October 22
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
- Canton 35 mi · last frost Apr 17
- Galesburg 37 mi · last frost Apr 20
- Quincy 52 mi · last frost Apr 8
- Jacksonville 56 mi · last frost Apr 17
- Peoria 59 mi · last frost Apr 16
Updated