Frost dates in Haynes, ND
The average last spring frost in Haynes is around May 20 and the first fall frost is around September 20. That gives Haynes an average growing season of about 123 days.
Last spring frost
| Early (10% chance after) | May 8 |
|---|---|
| Average (50%) | May 20 |
| Late (90%) | June 8 |
First fall frost
| Early (10%) | September 4 |
|---|---|
| Average (50%) | September 20 |
| Late (90% chance before) | October 4 |