Frost dates in Coos Bay, OR
The average last spring frost in Coos Bay is around March 12 and the first fall frost is around November 21. That gives Coos Bay an average growing season of about 254 days.
Last spring frost
| Early (10% chance after) | January 27 |
|---|---|
| Average (50%) | March 12 |
| Late (90%) | May 2 |
First fall frost
| Early (10%) | October 23 |
|---|---|
| Average (50%) | November 21 |
| Late (90% chance before) | December 20 |