Frost dates in Half Moon Bay, CA

The average last spring frost in Half Moon Bay is around February 10 and the first fall frost is around December 10. That gives Half Moon Bay an average growing season of about 304 days.

Last spring frost

Early (10% chance after)January 6
Average (50%)February 10
Late (90%)March 29

First fall frost

Early (10%)November 21
Average (50%)December 10
Late (90% chance before)December 26

See the Half Moon Bay planting calendar →