Frost dates in Pierre, SD

The average last spring frost in Pierre is around May 8 and the first fall frost is around October 5. That gives Pierre an average growing season of about 150 days.

Last spring frost

Early (10% chance after)April 20
Average (50%)May 8
Late (90%)May 16

First fall frost

Early (10%)September 22
Average (50%)October 5
Late (90% chance before)October 18

See the Pierre planting calendar →