Frost dates in Mount Shasta, CA

The average last spring frost in Mount Shasta is around May 20 and the first fall frost is around October 2. That gives Mount Shasta an average growing season of about 135 days.

Last spring frost

Early (10% chance after)May 1
Average (50%)May 20
Late (90%)June 12

First fall frost

Early (10%)September 13
Average (50%)October 2
Late (90% chance before)October 18

See the Mount Shasta planting calendar →