Frost dates in Olmsted, IL

The average last spring frost in Olmsted is around March 26 and the first fall frost is around November 3. That gives Olmsted an average growing season of about 222 days.

Last spring frost

Early (10% chance after)March 7
Average (50%)March 26
Late (90%)April 20

First fall frost

Early (10%)October 20
Average (50%)November 3
Late (90% chance before)November 16

See the Olmsted planting calendar →