Frost dates in Dorchester, WI
The average last spring frost in Dorchester is around May 18 and the first fall frost is around September 25. That gives Dorchester an average growing season of about 130 days.
Last spring frost
| Early (10% chance after) | May 3 |
|---|---|
| Average (50%) | May 18 |
| Late (90%) | June 5 |
First fall frost
| Early (10%) | September 10 |
|---|---|
| Average (50%) | September 25 |
| Late (90% chance before) | October 9 |