Frost dates in Fairmont, MN
The average last spring frost in Fairmont is around May 1 and the first fall frost is around October 8. That gives Fairmont an average growing season of about 160 days.
Last spring frost
| Early (10% chance after) | April 16 |
|---|---|
| Average (50%) | May 1 |
| Late (90%) | May 16 |
First fall frost
| Early (10%) | September 24 |
|---|---|
| Average (50%) | October 8 |
| Late (90% chance before) | October 23 |