Frost dates in Tonka Bay, MN
The average last spring frost in Tonka Bay is around April 28 and the first fall frost is around October 9. That gives Tonka Bay an average growing season of about 164 days.
Last spring frost
| Early (10% chance after) | April 17 |
|---|---|
| Average (50%) | April 28 |
| Late (90%) | May 14 |
First fall frost
| Early (10%) | September 24 |
|---|---|
| Average (50%) | October 9 |
| Late (90% chance before) | October 19 |