Frost dates in Brown Deer, WI
The average last spring frost in Brown Deer is around April 30 and the first fall frost is around October 20. That gives Brown Deer an average growing season of about 173 days.
Last spring frost
| Early (10% chance after) | April 22 |
|---|---|
| Average (50%) | April 30 |
| Late (90%) | June 17 |
First fall frost
| Early (10%) | September 30 |
|---|---|
| Average (50%) | October 20 |
| Late (90% chance before) | October 26 |