Frost dates in Susanville, CA
The average last spring frost in Susanville is around May 24 and the first fall frost is around September 24. That gives Susanville an average growing season of about 123 days.
Last spring frost
| Early (10% chance after) | May 1 |
|---|---|
| Average (50%) | May 24 |
| Late (90%) | June 18 |
First fall frost
| Early (10%) | September 8 |
|---|---|
| Average (50%) | September 24 |
| Late (90% chance before) | October 26 |