Frost dates in Alton, KS
The average last spring frost in Alton is around April 28 and the first fall frost is around October 9. That gives Alton an average growing season of about 164 days.
Last spring frost
| Early (10% chance after) | April 13 |
|---|---|
| Average (50%) | April 28 |
| Late (90%) | May 15 |
First fall frost
| Early (10%) | September 23 |
|---|---|
| Average (50%) | October 9 |
| Late (90% chance before) | October 24 |