Frost dates in San Luis Obispo, CA

The average last spring frost in San Luis Obispo is around February 19 and the first fall frost is around December 6. That gives San Luis Obispo an average growing season of about 291 days.

Last spring frost

Early (10% chance after)January 15
Average (50%)February 19
Late (90%)April 8

First fall frost

Early (10%)November 23
Average (50%)December 6
Late (90% chance before)December 27

See the San Luis Obispo planting calendar →