Frost dates in McGrath, MN
The average last spring frost in McGrath is around May 17 and the first fall frost is around September 23. That gives McGrath an average growing season of about 129 days.
Last spring frost
| Early (10% chance after) | April 29 |
|---|---|
| Average (50%) | May 17 |
| Late (90%) | June 1 |
First fall frost
| Early (10%) | September 7 |
|---|---|
| Average (50%) | September 23 |
| Late (90% chance before) | October 10 |