Frost dates in Denison, KS
The average last spring frost in Denison is around April 22 and the first fall frost is around October 12. That gives Denison an average growing season of about 173 days.
Last spring frost
| Early (10% chance after) | April 9 |
|---|---|
| Average (50%) | April 22 |
| Late (90%) | May 5 |
First fall frost
| Early (10%) | September 30 |
|---|---|
| Average (50%) | October 12 |
| Late (90% chance before) | October 28 |