Frost dates in Altus, OK
The average last spring frost in Altus is around April 4 and the first fall frost is around November 4. That gives Altus an average growing season of about 214 days.
Last spring frost
| Early (10% chance after) | March 17 |
|---|---|
| Average (50%) | April 4 |
| Late (90%) | April 15 |
First fall frost
| Early (10%) | October 21 |
|---|---|
| Average (50%) | November 4 |
| Late (90% chance before) | November 20 |