Frost dates in Half Moon Bay, CA
The average last spring frost in Half Moon Bay is around February 10 and the first fall frost is around December 10. That gives Half Moon Bay an average growing season of about 304 days.
Last spring frost
| Early (10% chance after) | January 6 |
|---|---|
| Average (50%) | February 10 |
| Late (90%) | March 29 |
First fall frost
| Early (10%) | November 21 |
|---|---|
| Average (50%) | December 10 |
| Late (90% chance before) | December 26 |