Frost dates in Detroit, OR
The average last spring frost in Detroit is around March 29 and the first fall frost is around November 25. That gives Detroit an average growing season of about 241 days.
Last spring frost
| Early (10% chance after) | March 1 |
|---|---|
| Average (50%) | March 29 |
| Late (90%) | April 30 |
First fall frost
| Early (10%) | November 1 |
|---|---|
| Average (50%) | November 25 |
| Late (90% chance before) | December 13 |