Frost dates in Greenbush, MN
The average last spring frost in Greenbush is around May 12 and the first fall frost is around September 22. That gives Greenbush an average growing season of about 133 days.
Last spring frost
| Early (10% chance after) | April 22 |
|---|---|
| Average (50%) | May 12 |
| Late (90%) | May 26 |
First fall frost
| Early (10%) | September 9 |
|---|---|
| Average (50%) | September 22 |
| Late (90% chance before) | October 17 |