Frost dates in McLeansboro, IL
The average last spring frost in McLeansboro is around April 13 and the first fall frost is around October 25. That gives McLeansboro an average growing season of about 195 days.
Last spring frost
| Early (10% chance after) | March 29 |
|---|---|
| Average (50%) | April 13 |
| Late (90%) | April 29 |
First fall frost
| Early (10%) | October 7 |
|---|---|
| Average (50%) | October 25 |
| Late (90% chance before) | November 6 |