Frost dates in Silverton, CO
The average last spring frost in Silverton is around July 8 and the first fall frost is around August 17. That gives Silverton an average growing season of about 40 days.
Last spring frost
| Early (10% chance after) | June 19 |
|---|---|
| Average (50%) | July 8 |
| Late (90%) | July 29 |
First fall frost
| Early (10%) | August 4 |
|---|---|
| Average (50%) | August 17 |
| Late (90% chance before) | September 9 |