Frost dates in John Day, OR
The average last spring frost in John Day is around May 19 and the first fall frost is around September 20. That gives John Day an average growing season of about 124 days.
Last spring frost
| Early (10% chance after) | May 2 |
|---|---|
| Average (50%) | May 19 |
| Late (90%) | June 9 |
First fall frost
| Early (10%) | September 6 |
|---|---|
| Average (50%) | September 20 |
| Late (90% chance before) | October 11 |