Frost dates in Bull Valley, IL
The average last spring frost in Bull Valley is around April 26 and the first fall frost is around October 30. That gives Bull Valley an average growing season of about 187 days.
Last spring frost
| Early (10% chance after) | April 4 |
|---|---|
| Average (50%) | April 26 |
| Late (90%) | May 4 |
First fall frost
| Early (10%) | October 15 |
|---|---|
| Average (50%) | October 30 |
| Late (90% chance before) | November 12 |