Last frost date in Rockford, Illinois
April 24
Average last frost in spring. In an early year (1 in 10) it's over by April 10; in a late year (1 in 10) it comes after May 8.
October 17
Average first frost in fall. 1 year in 10 it comes by October 2.
Source: NOAA U.S. Climate Normals 1991–2020, station Rockford Gtr Rockford AP (USW00094822), 4.8 miles from Rockford, elevation 730 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Belvidere and Loves Park, so their frost dates are the same as Rockford's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 10 | Apr 24 | May 8 |
| First frost in fall | Oct 2 | Oct 17 | Oct 30 |
Frost-free days in an average year: 174
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 4 | Oct 6 |
| Frost (32°F) | Every year | Apr 24 | Oct 17 |
| Hard freeze (28°F) | Every year | Apr 13 | Oct 28 |
Nights at 32°F or colder in an average year: 136
What to plant now in Rockford
- Spring planting calendar for an average last frost around April 20 Rockford: April 24
- Fall planting calendar for an average first frost around October 20 Rockford: October 17
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
- Machesney Park 8 mi · last frost May 1
- DeKalb 28 mi · last frost Apr 24
- Freeport 29 mi · last frost Apr 26
- Dixon 36 mi · last frost Apr 21
- Crystal Lake 37 mi · last frost Apr 25
Updated