Frost dates in Delavan, WI
The average last spring frost in Delavan is around April 29 and the first fall frost is around October 17. That gives Delavan an average growing season of about 171 days.
Last spring frost
| Early (10% chance after) | April 18 |
|---|---|
| Average (50%) | April 29 |
| Late (90%) | May 14 |
First fall frost
| Early (10%) | October 4 |
|---|---|
| Average (50%) | October 17 |
| Late (90% chance before) | October 27 |