Frost dates in Winfield, IL
The average last spring frost in Winfield is around April 28 and the first fall frost is around October 18. That gives Winfield an average growing season of about 173 days.
Last spring frost
| Early (10% chance after) | April 16 |
|---|---|
| Average (50%) | April 28 |
| Late (90%) | May 10 |
First fall frost
| Early (10%) | October 6 |
|---|---|
| Average (50%) | October 18 |
| Late (90% chance before) | October 28 |