Frost dates in New Haven, IL
The average last spring frost in New Haven is around March 24 and the first fall frost is around November 4. That gives New Haven an average growing season of about 225 days.
Last spring frost
| Early (10% chance after) | March 8 |
|---|---|
| Average (50%) | March 24 |
| Late (90%) | April 14 |
First fall frost
| Early (10%) | October 23 |
|---|---|
| Average (50%) | November 4 |
| Late (90% chance before) | November 16 |