Frost dates in Stanley, ND
The average last spring frost in Stanley is around May 20 and the first fall frost is around September 15. That gives Stanley an average growing season of about 118 days.
Last spring frost
| Early (10% chance after) | May 7 |
|---|---|
| Average (50%) | May 20 |
| Late (90%) | June 2 |
First fall frost
| Early (10%) | September 4 |
|---|---|
| Average (50%) | September 15 |
| Late (90% chance before) | October 1 |