Frost dates in Osawatomie, KS
The average last spring frost in Osawatomie is around April 15 and the first fall frost is around October 27. That gives Osawatomie an average growing season of about 195 days.
Last spring frost
| Early (10% chance after) | March 20 |
|---|---|
| Average (50%) | April 15 |
| Late (90%) | April 25 |
First fall frost
| Early (10%) | October 7 |
|---|---|
| Average (50%) | October 27 |
| Late (90% chance before) | November 13 |