Rockford, IL Frost Dates
The last spring frost in Rockford usually comes around April 24 and the first fall frost around October 17.
| Spring (last) | Fall (first) | |
|---|---|---|
| Frost, 32°F | April 24 | October 17 |
| Hard freeze, 28°F | April 13 | October 28 |
Growing season: about 174 days.
Frequently asked questions
When is the last frost in Rockford, IL?
The median date of the last spring frost (32°F) is April 24. In half of years the last frost comes earlier and in half it comes later, so waiting a week or two past April 24 lowers the risk for tender plants.
When is the first frost in Rockford?
The median date of the first fall frost (32°F) is October 17, and a hard freeze (28°F) usually follows around October 28.
How long is the growing season in Rockford?
About 174 days between the median last spring frost and first fall frost.
NOAA NCEI U.S. Climate Normals 1991-2020, station USW00094822. Median (50% probability) dates. Low spots and valleys can frost later in spring and earlier in fall than the station.