Frost dates in Hannah, ND
The average last spring frost in Hannah is around May 26 and the first fall frost is around September 16. That gives Hannah an average growing season of about 113 days.
Last spring frost
| Early (10% chance after) | May 9 |
|---|---|
| Average (50%) | May 26 |
| Late (90%) | June 15 |
First fall frost
| Early (10%) | August 28 |
|---|---|
| Average (50%) | September 16 |
| Late (90% chance before) | October 2 |