Frost dates in Porterville, CA

The average last spring frost in Porterville is around March 1 and the first fall frost is around November 28. That gives Porterville an average growing season of about 272 days.

Last spring frost

Early (10% chance after)January 22
Average (50%)March 1
Late (90%)April 9

First fall frost

Early (10%)November 12
Average (50%)November 28
Late (90% chance before)December 16

See the Porterville planting calendar →