Frost dates in Crystal Lake, IL

The average last spring frost in Crystal Lake is around April 26 and the first fall frost is around October 30. That gives Crystal Lake an average growing season of about 187 days.

Last spring frost

Early (10% chance after)April 4
Average (50%)April 26
Late (90%)May 4

First fall frost

Early (10%)October 15
Average (50%)October 30
Late (90% chance before)November 12

See the Crystal Lake planting calendar →