Frost dates in Alsen, ND
The average last spring frost in Alsen is around May 24 and the first fall frost is around September 14. That gives Alsen an average growing season of about 113 days.
Last spring frost
| Early (10% chance after) | May 9 |
|---|---|
| Average (50%) | May 24 |
| Late (90%) | June 13 |
First fall frost
| Early (10%) | August 28 |
|---|---|
| Average (50%) | September 14 |
| Late (90% chance before) | October 2 |