Frost dates in Spring Grove, MN
The average last spring frost in Spring Grove is around May 12 and the first fall frost is around October 8. That gives Spring Grove an average growing season of about 149 days.
Last spring frost
| Early (10% chance after) | April 26 |
|---|---|
| Average (50%) | May 12 |
| Late (90%) | May 23 |
First fall frost
| Early (10%) | September 28 |
|---|---|
| Average (50%) | October 8 |
| Late (90% chance before) | October 16 |