Frost dates in Hayward, CA
The average last spring frost in Hayward is around January 15 and the first fall frost is around December 19. That gives Hayward an average growing season of about 339 days.
Last spring frost
| Early (10% chance after) | January 4 |
|---|---|
| Average (50%) | January 15 |
| Late (90%) | January 27 |
First fall frost
| Early (10%) | December 6 |
|---|---|
| Average (50%) | December 19 |
| Late (90% chance before) | December 23 |