Frost dates in Griggsville, IL

The average last spring frost in Griggsville is around April 15 and the first fall frost is around October 26. That gives Griggsville an average growing season of about 194 days.

Last spring frost

Early (10% chance after)March 29
Average (50%)April 15
Late (90%)May 4

First fall frost

Early (10%)October 8
Average (50%)October 26
Late (90% chance before)November 5

See the Griggsville planting calendar →