Frost dates in Tolley, ND
The average last spring frost in Tolley is around May 16 and the first fall frost is around September 21. That gives Tolley an average growing season of about 128 days.
Last spring frost
| Early (10% chance after) | May 5 |
|---|---|
| Average (50%) | May 16 |
| Late (90%) | May 29 |
First fall frost
| Early (10%) | September 5 |
|---|---|
| Average (50%) | September 21 |
| Late (90% chance before) | October 6 |