Frost dates in Sparta, IL
The average last spring frost in Sparta is around April 12 and the first fall frost is around October 20. That gives Sparta an average growing season of about 191 days.
Last spring frost
| Early (10% chance after) | March 26 |
|---|---|
| Average (50%) | April 12 |
| Late (90%) | April 28 |
First fall frost
| Early (10%) | October 6 |
|---|---|
| Average (50%) | October 20 |
| Late (90% chance before) | November 6 |