Frost dates in Long Lake, SD

The average last spring frost in Long Lake is around May 8 and the first fall frost is around October 6. That gives Long Lake an average growing season of about 151 days.

Last spring frost

Early (10% chance after)April 23
Average (50%)May 8
Late (90%)May 16

First fall frost

Early (10%)September 20
Average (50%)October 6
Late (90% chance before)October 16

See the Long Lake planting calendar →