Frost dates in Box Elder, SD

The average last spring frost in Box Elder is around May 11 and the first fall frost is around September 29. That gives Box Elder an average growing season of about 141 days.

Last spring frost

Early (10% chance after)April 22
Average (50%)May 11
Late (90%)May 24

First fall frost

Early (10%)September 13
Average (50%)September 29
Late (90% chance before)October 13

See the Box Elder planting calendar →