Frost dates in North Chicago, IL
The average last spring frost in North Chicago is around April 29 and the first fall frost is around October 14. That gives North Chicago an average growing season of about 168 days.
Last spring frost
| Early (10% chance after) | April 11 |
|---|---|
| Average (50%) | April 29 |
| Late (90%) | May 10 |
First fall frost
| Early (10%) | September 30 |
|---|---|
| Average (50%) | October 14 |
| Late (90% chance before) | November 1 |