Frost dates in Clear Lake, MN
The average last spring frost in Clear Lake is around May 10 and the first fall frost is around September 25. That gives Clear Lake an average growing season of about 138 days.
Last spring frost
| Early (10% chance after) | April 25 |
|---|---|
| Average (50%) | May 10 |
| Late (90%) | May 23 |
First fall frost
| Early (10%) | September 15 |
|---|---|
| Average (50%) | September 25 |
| Late (90% chance before) | October 9 |