Frost dates in Castalia, OH
The average last spring frost in Castalia is around April 15 and the first fall frost is around November 2. That gives Castalia an average growing season of about 201 days.
Last spring frost
| Early (10% chance after) | March 31 |
|---|---|
| Average (50%) | April 15 |
| Late (90%) | April 28 |
First fall frost
| Early (10%) | October 21 |
|---|---|
| Average (50%) | November 2 |
| Late (90% chance before) | November 16 |