Frost dates in Coleraine, MN
The average last spring frost in Coleraine is around May 22 and the first fall frost is around September 19. That gives Coleraine an average growing season of about 120 days.
Last spring frost
| Early (10% chance after) | May 9 |
|---|---|
| Average (50%) | May 22 |
| Late (90%) | June 9 |
First fall frost
| Early (10%) | August 24 |
|---|---|
| Average (50%) | September 19 |
| Late (90% chance before) | October 2 |