Frost dates in Round Lake Heights, IL

The average last spring frost in Round Lake Heights is around April 25 and the first fall frost is around October 12. That gives Round Lake Heights an average growing season of about 170 days.

Last spring frost

Early (10% chance after)April 17
Average (50%)April 25
Late (90%)May 6

First fall frost

Early (10%)October 3
Average (50%)October 12
Late (90% chance before)October 24

See the Round Lake Heights planting calendar →