Frost dates in Columbia, IL
The average last spring frost in Columbia is around April 10 and the first fall frost is around October 20. That gives Columbia an average growing season of about 193 days.
Last spring frost
| Early (10% chance after) | March 27 |
|---|---|
| Average (50%) | April 10 |
| Late (90%) | April 29 |
First fall frost
| Early (10%) | October 6 |
|---|---|
| Average (50%) | October 20 |
| Late (90% chance before) | November 9 |