Frost dates in Savanna, OK
The average last spring frost in Savanna is around March 31 and the first fall frost is around November 2. That gives Savanna an average growing season of about 216 days.
Last spring frost
| Early (10% chance after) | March 15 |
|---|---|
| Average (50%) | March 31 |
| Late (90%) | April 15 |
First fall frost
| Early (10%) | October 19 |
|---|---|
| Average (50%) | November 2 |
| Late (90% chance before) | November 21 |