Frost dates in Owosso, MI
The average last spring frost in Owosso is around May 8 and the first fall frost is around October 6. That gives Owosso an average growing season of about 151 days.
Last spring frost
| Early (10% chance after) | April 23 |
|---|---|
| Average (50%) | May 8 |
| Late (90%) | May 24 |
First fall frost
| Early (10%) | September 23 |
|---|---|
| Average (50%) | October 6 |
| Late (90% chance before) | October 23 |