Frost dates in Keizer, OR
The average last spring frost in Keizer is around April 19 and the first fall frost is around October 28. That gives Keizer an average growing season of about 192 days.
Last spring frost
| Early (10% chance after) | March 17 |
|---|---|
| Average (50%) | April 19 |
| Late (90%) | May 13 |
First fall frost
| Early (10%) | October 5 |
|---|---|
| Average (50%) | October 28 |
| Late (90% chance before) | November 26 |