Frost dates in Washington, UT
The average last spring frost in Washington is around March 30 and the first fall frost is around November 4. That gives Washington an average growing season of about 219 days.
Last spring frost
| Early (10% chance after) | March 1 |
|---|---|
| Average (50%) | March 30 |
| Late (90%) | May 2 |
First fall frost
| Early (10%) | October 11 |
|---|---|
| Average (50%) | November 4 |
| Late (90% chance before) | November 23 |