Frost dates in Windsor, CA

The average last spring frost in Windsor is around March 5 and the first fall frost is around November 15. That gives Windsor an average growing season of about 255 days.

Last spring frost

Early (10% chance after)February 7
Average (50%)March 5
Late (90%)April 18

First fall frost

Early (10%)November 1
Average (50%)November 15
Late (90% chance before)December 14

See the Windsor planting calendar →