Frost dates in Rohnert Park, CA

The average last spring frost in Rohnert Park is around March 22 and the first fall frost is around November 16. That gives Rohnert Park an average growing season of about 239 days.

Last spring frost

Early (10% chance after)January 31
Average (50%)March 22
Late (90%)May 3

First fall frost

Early (10%)October 24
Average (50%)November 16
Late (90% chance before)December 10

See the Rohnert Park planting calendar →