Frost dates in Harvey, ND
The average last spring frost in Harvey is around May 14 and the first fall frost is around September 23. That gives Harvey an average growing season of about 132 days.
Last spring frost
| Early (10% chance after) | April 27 |
|---|---|
| Average (50%) | May 14 |
| Late (90%) | May 24 |
First fall frost
| Early (10%) | September 13 |
|---|---|
| Average (50%) | September 23 |
| Late (90% chance before) | October 6 |