Frost dates in Willow Lake, SD

The average last spring frost in Willow Lake is around May 4 and the first fall frost is around November 1. That gives Willow Lake an average growing season of about 181 days.

Last spring frost

Early (10% chance after)February 18
Average (50%)May 4
Late (90%)May 13

First fall frost

Early (10%)September 5
Average (50%)November 1
Late (90% chance before)November 22

See the Willow Lake planting calendar →