Frost dates in Plainfield, WI
The average last spring frost in Plainfield is around May 14 and the first fall frost is around September 29. That gives Plainfield an average growing season of about 138 days.
Last spring frost
| Early (10% chance after) | April 28 |
|---|---|
| Average (50%) | May 14 |
| Late (90%) | May 30 |
First fall frost
| Early (10%) | September 17 |
|---|---|
| Average (50%) | September 29 |
| Late (90% chance before) | October 13 |