Frost dates in Deadwood, SD

The average last spring frost in Deadwood is around May 30 and the first fall frost is around September 18. That gives Deadwood an average growing season of about 111 days.

Last spring frost

Early (10% chance after)May 14
Average (50%)May 30
Late (90%)June 19

First fall frost

Early (10%)September 5
Average (50%)September 18
Late (90% chance before)September 28

See the Deadwood planting calendar →