Frost dates in Prairie du Sac, WI
The average last spring frost in Prairie du Sac is around May 10 and the first fall frost is around October 11. That gives Prairie du Sac an average growing season of about 154 days.
Last spring frost
| Early (10% chance after) | April 20 |
|---|---|
| Average (50%) | May 10 |
| Late (90%) | May 27 |
First fall frost
| Early (10%) | September 29 |
|---|---|
| Average (50%) | October 11 |
| Late (90% chance before) | October 21 |