Frost dates in Signal Hill, CA
The average last spring frost in Signal Hill is around January 13 and the first fall frost is around December 22. That gives Signal Hill an average growing season of about 344 days.
Last spring frost
| Early (10% chance after) | January 3 |
|---|---|
| Average (50%) | January 13 |
| Late (90%) | January 29 |
First fall frost
| Early (10%) | December 8 |
|---|---|
| Average (50%) | December 22 |
| Late (90% chance before) | December 26 |