Frost dates in Galena, IL
The average last spring frost in Galena is around April 29 and the first fall frost is around October 12. That gives Galena an average growing season of about 166 days.
Last spring frost
| Early (10% chance after) | April 10 |
|---|---|
| Average (50%) | April 29 |
| Late (90%) | May 15 |
First fall frost
| Early (10%) | September 23 |
|---|---|
| Average (50%) | October 12 |
| Late (90% chance before) | October 23 |