Frost dates in Wilmington, IL
The average last spring frost in Wilmington is around April 16 and the first fall frost is around October 17. That gives Wilmington an average growing season of about 184 days.
Last spring frost
| Early (10% chance after) | April 2 |
|---|---|
| Average (50%) | April 16 |
| Late (90%) | May 2 |
First fall frost
| Early (10%) | October 3 |
|---|---|
| Average (50%) | October 17 |
| Late (90% chance before) | November 1 |