Frost dates in Karlstad, MN
The average last spring frost in Karlstad is around May 18 and the first fall frost is around September 23. That gives Karlstad an average growing season of about 128 days.
Last spring frost
| Early (10% chance after) | May 7 |
|---|---|
| Average (50%) | May 18 |
| Late (90%) | May 29 |
First fall frost
| Early (10%) | September 9 |
|---|---|
| Average (50%) | September 23 |
| Late (90% chance before) | October 4 |