Frost dates in Belle Plaine, MN
The average last spring frost in Belle Plaine is around May 8 and the first fall frost is around September 30. That gives Belle Plaine an average growing season of about 145 days.
Last spring frost
| Early (10% chance after) | April 20 |
|---|---|
| Average (50%) | May 8 |
| Late (90%) | May 21 |
First fall frost
| Early (10%) | September 16 |
|---|---|
| Average (50%) | September 30 |
| Late (90% chance before) | October 12 |