Frost dates in Riverwoods, IL

The average last spring frost in Riverwoods is around April 22 and the first fall frost is around October 22. That gives Riverwoods an average growing season of about 183 days.

Last spring frost

Early (10% chance after)April 12
Average (50%)April 22
Late (90%)May 1

First fall frost

Early (10%)October 8
Average (50%)October 22
Late (90% chance before)November 2

See the Riverwoods planting calendar →