Weather history and climate summary information is available for the following locations:
- LaCrosse
- Madison
- Milwaukee
Warmest January Days
The warmest January days in Wisconsin are:
| Milwaukee, Wisconsin | 2008 | 63°F |
| Milwaukee, Wisconsin | 1997 | 60.8°F |
| Milwaukee, Wisconsin | 1950 | 59°F |
| Milwaukee, Wisconsin | 1989 | 57°F |
| LaCrosse, Wisconsin | 1981 | 56.8°F |
Coldest January Days
The coldest January days in Wisconsin were:
| LaCrosse, Wisconsin | 1951 | -36.6°F |
| Madison, Wisconsin | 1951 | -36°F |
| LaCrosse, Wisconsin | 1994 | -33.2°F |
| LaCrosse, Wisconsin | 1963 | -31°F |
| Madison, Wisconsin | 1963 | -29.6°F |
Wettest January Days
The wettest single days in January occurred:
| Milwaukee, Wisconsin | 1985 | 1.7 inches |
| Milwaukee, Wisconsin | 1988 | 1.7 inches |
| Madison, Wisconsin | 1973 | 1.7 inches |
| LaCrosse, Wisconsin | 1994 | 1.6 inches |
| Milwaukee, Wisconsin | 1960 | 1.5 inches |