Frost dates in Thayer, IL
The average last spring frost in Thayer is around April 14 and the first fall frost is around October 18. That gives Thayer an average growing season of about 187 days.
Last spring frost
| Early (10% chance after) | April 2 |
|---|---|
| Average (50%) | April 14 |
| Late (90%) | April 29 |
First fall frost
| Early (10%) | October 2 |
|---|---|
| Average (50%) | October 18 |
| Late (90% chance before) | November 3 |