Frost dates in Norwalk, WI
The average last spring frost in Norwalk is around May 11 and the first fall frost is around October 8. That gives Norwalk an average growing season of about 150 days.
Last spring frost
| Early (10% chance after) | April 26 |
|---|---|
| Average (50%) | May 11 |
| Late (90%) | May 22 |
First fall frost
| Early (10%) | September 29 |
|---|---|
| Average (50%) | October 8 |
| Late (90% chance before) | October 17 |