Frost dates in Etna, CA
The average last spring frost in Etna is around May 30 and the first fall frost is around September 23. That gives Etna an average growing season of about 116 days.
Last spring frost
| Early (10% chance after) | May 15 |
|---|---|
| Average (50%) | May 30 |
| Late (90%) | June 23 |
First fall frost
| Early (10%) | September 13 |
|---|---|
| Average (50%) | September 23 |
| Late (90% chance before) | October 13 |