Frost dates in Oslo, MN
The average last spring frost in Oslo is around May 10 and the first fall frost is around October 10. That gives Oslo an average growing season of about 153 days.
Last spring frost
| Early (10% chance after) | April 25 |
|---|---|
| Average (50%) | May 10 |
| Late (90%) | May 19 |
First fall frost
| Early (10%) | September 28 |
|---|---|
| Average (50%) | October 10 |
| Late (90% chance before) | October 16 |