Frost dates in Forest City, IL

The average last spring frost in Forest City is around April 19 and the first fall frost is around October 12. That gives Forest City an average growing season of about 176 days.

Last spring frost

Early (10% chance after)April 6
Average (50%)April 19
Late (90%)May 4

First fall frost

Early (10%)September 27
Average (50%)October 12
Late (90% chance before)October 26

See the Forest City planting calendar →