Frost dates for Effingham, Illinois
In a typical year, Effingham’s last spring frost lands around Apr 13 and the first fall frost around Oct 24, a growing season of about 194 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 6b.
Right now the typical frost season has arrived; planting waits for spring.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Apr 1 | Oct 9 |
| 50 percent | Apr 13 | Oct 24 |
| 90 percent | Apr 29 | Nov 5 |
A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.
Soil in Effingham is typically around 55°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
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Common questions
When is the last frost in Effingham, Illinois?
Effingham’s last spring frost falls around April 13 in a typical year. One year in ten it is done by April 1, and one year in ten frost holds on until April 29. Frost-sensitive planting usually waits for the late side of that band.
When is the first fall frost in Effingham?
The first fall frost arrives around October 24 in a typical year, as early as October 9 in an early year and as late as November 5 in a late one.
How long is the growing season in Effingham?
About 194 days, counted between the typical last spring frost and the typical first fall frost.
What USDA zone is Effingham in?
Effingham is in USDA hardiness zone 6b under the 2023 USDA Plant Hardiness Zone Map.
Dates come from 30-year NOAA climate normals for the nearest reporting station. They describe odds, not a forecast.
Nearby cities
- Terre Haute, IN (around Apr 15 to Oct 19)
- Springfield, IL (around Apr 15 to Oct 22)
- Champaign, IL (around Apr 15 to Oct 24)
- Belleville, IL (around Apr 12 to Oct 20)
- Evansville, IN (around Mar 29 to Nov 10)
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