Frost dates in Thomasboro, IL
The average last spring frost in Thomasboro is around April 21 and the first fall frost is around October 16. That gives Thomasboro 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 |