Frost dates in Ravenna, MI
The average last spring frost in Ravenna is around May 10 and the first fall frost is around October 18. That gives Ravenna an average growing season of about 161 days.
Last spring frost
| Early (10% chance after) | March 31 |
|---|---|
| Average (50%) | May 10 |
| Late (90%) | May 20 |
First fall frost
| Early (10%) | September 23 |
|---|---|
| Average (50%) | October 18 |
| Late (90% chance before) | November 8 |