Frost dates in Willow City, ND
The average last spring frost in Willow City is around May 26 and the first fall frost is around September 12. That gives Willow City an average growing season of about 109 days.
Last spring frost
| Early (10% chance after) | May 9 |
|---|---|
| Average (50%) | May 26 |
| Late (90%) | June 14 |
First fall frost
| Early (10%) | August 22 |
|---|---|
| Average (50%) | September 12 |
| Late (90% chance before) | September 28 |