Frost dates in Mound City, IL
The average last spring frost in Mound City is around March 25 and the first fall frost is around November 6. That gives Mound City an average growing season of about 226 days.
Last spring frost
| Early (10% chance after) | March 5 |
|---|---|
| Average (50%) | March 25 |
| Late (90%) | April 10 |
First fall frost
| Early (10%) | October 24 |
|---|---|
| Average (50%) | November 6 |
| Late (90% chance before) | November 24 |