Frost dates in Leavenworth, KS
The average last spring frost in Leavenworth is around April 12 and the first fall frost is around October 21. That gives Leavenworth an average growing season of about 192 days.
Last spring frost
| Early (10% chance after) | March 28 |
|---|---|
| Average (50%) | April 12 |
| Late (90%) | April 28 |
First fall frost
| Early (10%) | October 4 |
|---|---|
| Average (50%) | October 21 |
| Late (90% chance before) | November 9 |