Frost dates in Bear River, WY
The average last spring frost in Bear River is around June 11 and the first fall frost is around September 22. That gives Bear River an average growing season of about 103 days.
Last spring frost
| Early (10% chance after) | May 14 |
|---|---|
| Average (50%) | June 11 |
| Late (90%) | June 20 |
First fall frost
| Early (10%) | September 9 |
|---|---|
| Average (50%) | September 22 |
| Late (90% chance before) | October 15 |