Frost dates in Northwood, ND
The average last spring frost in Northwood is around May 18 and the first fall frost is around September 23. That gives Northwood an average growing season of about 128 days.
Last spring frost
| Early (10% chance after) | May 7 |
|---|---|
| Average (50%) | May 18 |
| Late (90%) | June 4 |
First fall frost
| Early (10%) | September 8 |
|---|---|
| Average (50%) | September 23 |
| Late (90% chance before) | October 6 |