Frost dates in Harwood, ND
The average last spring frost in Harwood is around May 12 and the first fall frost is around September 27. That gives Harwood an average growing season of about 138 days.
Last spring frost
| Early (10% chance after) | April 26 |
|---|---|
| Average (50%) | May 12 |
| Late (90%) | May 27 |
First fall frost
| Early (10%) | September 15 |
|---|---|
| Average (50%) | September 27 |
| Late (90% chance before) | October 12 |