Frost dates in Biwabik, MN
The average last spring frost in Biwabik is around June 13 and the first fall frost is around September 5. That gives Biwabik an average growing season of about 84 days.
Last spring frost
| Early (10% chance after) | June 2 |
|---|---|
| Average (50%) | June 13 |
| Late (90%) | July 12 |
First fall frost
| Early (10%) | August 15 |
|---|---|
| Average (50%) | September 5 |
| Late (90% chance before) | September 26 |