Frost dates in Rantoul, IL
The average last spring frost in Rantoul is around April 21 and the first fall frost is around October 16. That gives Rantoul an average growing season of about 178 days.
Last spring frost
| Early (10% chance after) | April 10 |
|---|---|
| Average (50%) | April 21 |
| Late (90%) | May 9 |
First fall frost
| Early (10%) | October 3 |
|---|---|
| Average (50%) | October 16 |
| Late (90% chance before) | November 3 |