Frost dates in Healdsburg, CA
The average last spring frost in Healdsburg is around March 9 and the first fall frost is around November 20. That gives Healdsburg an average growing season of about 256 days.
Last spring frost
| Early (10% chance after) | January 22 |
|---|---|
| Average (50%) | March 9 |
| Late (90%) | April 21 |
First fall frost
| Early (10%) | October 26 |
|---|---|
| Average (50%) | November 20 |
| Late (90% chance before) | December 12 |