Frost dates in Blue Island, IL
The average last spring frost in Blue Island is around April 17 and the first fall frost is around October 27. That gives Blue Island an average growing season of about 193 days.
Last spring frost
| Early (10% chance after) | April 3 |
|---|---|
| Average (50%) | April 17 |
| Late (90%) | May 7 |
First fall frost
| Early (10%) | October 10 |
|---|---|
| Average (50%) | October 27 |
| Late (90% chance before) | November 10 |