Frost dates in Omro, WI
The average last spring frost in Omro is around May 4 and the first fall frost is around October 7. That gives Omro an average growing season of about 156 days.
Last spring frost
| Early (10% chance after) | April 17 |
|---|---|
| Average (50%) | May 4 |
| Late (90%) | May 22 |
First fall frost
| Early (10%) | September 22 |
|---|---|
| Average (50%) | October 7 |
| Late (90% chance before) | October 29 |