Frost dates in San Bernardino, CA

The average last spring frost in San Bernardino is around February 19 and the first fall frost is around December 8. That gives San Bernardino an average growing season of about 293 days.

Last spring frost

Early (10% chance after)January 12
Average (50%)February 19
Late (90%)March 21

First fall frost

Early (10%)November 16
Average (50%)December 8
Late (90% chance before)December 25

See the San Bernardino planting calendar →