Frost dates in Vallejo, CA
The average last spring frost in Vallejo is around February 23 and the first fall frost is around December 6. That gives Vallejo an average growing season of about 287 days.
Last spring frost
| Early (10% chance after) | January 3 |
|---|---|
| Average (50%) | February 23 |
| Late (90%) | April 3 |
First fall frost
| Early (10%) | November 19 |
|---|---|
| Average (50%) | December 6 |
| Late (90% chance before) | December 22 |