Frost dates in Clarksville, IA

The average last spring frost in Clarksville is around April 30 and the first fall frost is around October 6. That gives Clarksville an average growing season of about 159 days.

Last spring frost

Early (10% chance after)April 15
Average (50%)April 30
Late (90%)May 15

First fall frost

Early (10%)September 23
Average (50%)October 6
Late (90% chance before)October 23

See the Clarksville planting calendar →