Frost dates in Millbrae, CA

The average last spring frost in Millbrae is around January 20 and the first fall frost is around December 16. That gives Millbrae an average growing season of about 331 days.

Last spring frost

Early (10% chance after)January 3
Average (50%)January 20
Late (90%)February 13

First fall frost

Early (10%)December 3
Average (50%)December 16
Late (90% chance before)December 25

See the Millbrae planting calendar →