Frost dates in Fort Atkinson, WI
The average last spring frost in Fort Atkinson is around May 4 and the first fall frost is around October 6. That gives Fort Atkinson an average growing season of about 155 days.
Last spring frost
| Early (10% chance after) | April 20 |
|---|---|
| Average (50%) | May 4 |
| Late (90%) | May 20 |
First fall frost
| Early (10%) | September 23 |
|---|---|
| Average (50%) | October 6 |
| Late (90% chance before) | October 21 |