Frost dates in Powell, WY

The average last spring frost in Powell is around May 16 and the first fall frost is around September 20. That gives Powell an average growing season of about 127 days.

Last spring frost

Early (10% chance after)May 4
Average (50%)May 16
Late (90%)June 21

First fall frost

Early (10%)September 9
Average (50%)September 20
Late (90% chance before)October 6

See the Powell planting calendar →