Frost dates in Westport, MN
The average last spring frost in Westport is around May 9 and the first fall frost is around September 26. That gives Westport an average growing season of about 140 days.
Last spring frost
| Early (10% chance after) | April 24 |
|---|---|
| Average (50%) | May 9 |
| Late (90%) | May 21 |
First fall frost
| Early (10%) | September 15 |
|---|---|
| Average (50%) | September 26 |
| Late (90% chance before) | October 10 |