Frost dates in White Sulphur Springs, MT

The average last spring frost in White Sulphur Springs is around June 7 and the first fall frost is around September 9. That gives White Sulphur Springs an average growing season of about 94 days.

Last spring frost

Early (10% chance after)May 22
Average (50%)June 7
Late (90%)June 17

First fall frost

Early (10%)August 18
Average (50%)September 9
Late (90% chance before)September 24

See the White Sulphur Springs planting calendar →