Frost dates in Mazon, IL
The average last spring frost in Mazon is around April 28 and the first fall frost is around October 10. That gives Mazon an average growing season of about 165 days.
Last spring frost
| Early (10% chance after) | April 16 |
|---|---|
| Average (50%) | April 28 |
| Late (90%) | May 14 |
First fall frost
| Early (10%) | September 27 |
|---|---|
| Average (50%) | October 10 |
| Late (90% chance before) | October 29 |