Frost dates in Ruthven, IA

The average last spring frost in Ruthven is around April 29 and the first fall frost is around October 7. That gives Ruthven an average growing season of about 161 days.

Last spring frost

Early (10% chance after)April 13
Average (50%)April 29
Late (90%)May 12

First fall frost

Early (10%)September 24
Average (50%)October 7
Late (90% chance before)October 28

See the Ruthven planting calendar →