Frost dates in Washington Park, IL
The average last spring frost in Washington Park is around April 9 and the first fall frost is around October 22. That gives Washington Park an average growing season of about 196 days.
Last spring frost
| Early (10% chance after) | March 26 |
|---|---|
| Average (50%) | April 9 |
| Late (90%) | April 22 |
First fall frost
| Early (10%) | October 8 |
|---|---|
| Average (50%) | October 22 |
| Late (90% chance before) | November 3 |