Frost dates in Alton, UT

The average last spring frost in Alton is around June 5 and the first fall frost is around September 25. That gives Alton an average growing season of about 112 days.

Last spring frost

Early (10% chance after)May 22
Average (50%)June 5
Late (90%)June 19

First fall frost

Early (10%)September 9
Average (50%)September 25
Late (90% chance before)October 13

See the Alton planting calendar →