Weather history and climate summary information is available for the following locations:
- LaCrosse
- Madison
- Milwaukee
Warmest August Days
The warmest August days in Wisconsin are:
| LaCrosse, Wisconsin | 1988 | 105.1°F |
| LaCrosse, Wisconsin | 1955 | 103.3°F |
| LaCrosse, Wisconsin | 1948 | 103.3°F |
| Milwaukee, Wisconsin | 1988 | 102.9°F |
| Madison, Wisconsin | 1988 | 102°F |
Coldest August Days
The coldest August days in Wisconsin were:
| LaCrosse, Wisconsin | 1950 | 36°F |
| Madison, Wisconsin | 1979 | 36.9°F |
| Madison, Wisconsin | 1958 | 37.4°F |
| Madison, Wisconsin | 1964 | 37.4°F |
| Madison, Wisconsin | 1982 | 37.9°F |
Wettest August Days
The wettest single days in August occurred:
| Milwaukee, Wisconsin | 1992 | 9 inches |
| Madison, Wisconsin | 1992 | 9 inches |
| LaCrosse, Wisconsin | 2007 | 6 inches |
| Madison, Wisconsin | 2007 | 4.4 inches |
| Madison, Wisconsin | 2001 | 3.9 inches |