Frost dates in Courtland, MN
The average last spring frost in Courtland is around April 29 and the first fall frost is around October 9. That gives Courtland an average growing season of about 163 days.
Last spring frost
| Early (10% chance after) | April 20 |
|---|---|
| Average (50%) | April 29 |
| Late (90%) | May 13 |
First fall frost
| Early (10%) | September 16 |
|---|---|
| Average (50%) | October 9 |
| Late (90% chance before) | October 19 |