Frost dates in Walnut Creek, CA
The average last spring frost in Walnut Creek is around January 18 and the first fall frost is around December 18. That gives Walnut Creek an average growing season of about 335 days.
Last spring frost
| Early (10% chance after) | January 6 |
|---|---|
| Average (50%) | January 18 |
| Late (90%) | February 15 |
First fall frost
| Early (10%) | November 24 |
|---|---|
| Average (50%) | December 18 |
| Late (90% chance before) | December 24 |