Frost dates in Clayton, IL
The average last spring frost in Clayton is around April 15 and the first fall frost is around October 16. That gives Clayton an average growing season of about 184 days.
Last spring frost
| Early (10% chance after) | March 30 |
|---|---|
| Average (50%) | April 15 |
| Late (90%) | May 3 |
First fall frost
| Early (10%) | October 1 |
|---|---|
| Average (50%) | October 16 |
| Late (90% chance before) | November 4 |