| Month | High (°F) | Low (°F) | Precipitation (in) |
|---|---|---|---|
| January | 23.8 | 6.7 | 1.2 |
| February | 28.8 | 9.5 | 1.1 |
| March | 40.7 | 20.4 | 1.8 |
| April | 54.3 | 31.9 | 3.2 |
| May | 67.2 | 43.6 | 3.9 |
| June | 76.4 | 53.7 | 4.7 |
| July | 80.4 | 58.1 | 4.0 |
| August | 78.2 | 56.2 | 3.9 |
| September | 70.6 | 48.4 | 3.6 |
| October | 57.0 | 36.6 | 3.0 |
| November | 41.5 | 25.3 | 2.0 |
| December | 29.0 | 13.8 | 1.5 |
| Entire Year | 54.0 | 33.7 | 34.1 |
| City | Average (°F) | Record (°F) | Yearly (inches) | |||
|---|---|---|---|---|---|---|
| High | Low | High | Low | Precipitation | Snow | |
| Appleton | 55.0 | 36.5 | 107 | -32 | 33.1 | 48.6 |
| Baraboo | 57.1 | 34.2 | 103 | -45 | 38.0 | 44.2 |
| Beloit | 57.3 | 38.4 | 110 | -29 | 36.8 | 36.8 |
| Dodgeville | 55.9 | 35.6 | 108 | -33 | 39.6 | 39.4 |
| Eau Claire | 55.1 | 34.8 | 111 | -45 | 33.0 | 54.9 |
| Fond Du Lac | 54.3 | 37.3 | 111 | -41 | 31.0 | 40.0 |
| Fort Atkinson | 57.2 | 37.6 | 103 | -39 | 35.5 | 38.3 |
| Green Bay | 55.0 | 36.2 | 104 | -36 | 31.6 | 55.7 |
| Hartford | 55.4 | 35.4 | 105 | -35 | 33.9 | 35.8 |
| Janesville | 58.0 | 37.4 | 103 | -31 | 37.4 | 40.9 |
| Kenosha | 55.9 | 40.8 | 105 | -31 | 37.1 | 36.9 |
| La Crosse | 57.7 | 38.5 | 108 | -43 | 35.1 | 46.2 |
| Lake Mills | 57.6 | 38.2 | 110 | -33 | 37.4 | 42.7 |
| Madison | 56.9 | 37.7 | 107 | -37 | 37.1 | 51.3 |
| Manitowoc | 53.5 | 38.4 | 105 | -29 | 31.6 | 29.1 |
| Marinette | 53.8 | 36.6 | 108 | -30 | 33.3 | 45.4 |
| Marshfield | 54.0 | 34.3 | 105 | -37 | 33.6 | 57.6 |
| Menomonie | 55.8 | 34.7 | 103 | -46 | 33.8 | 43.2 |
| Merrill | 52.9 | 31.6 | 110 | -48 | 33.6 | 53.0 |
| Milwaukee | 56.5 | 40.9 | 105 | -26 | 34.6 | 48.8 |
| Minocqua | 51.0 | 28.7 | 106 | -48 | 34.1 | 97.0 |
| New London | 54.8 | 34.8 | 109 | -37 | 33.6 | 45.3 |
| Oconomowoc | 56.8 | 37.4 | 103 | -33 | 36.6 | 40.6 |
| Oshkosh | 55.4 | 38.0 | 107 | -34 | 33.3 | 38.1 |
| Plymouth | 55.0 | 36.8 | 107 | -29 | 33.5 | 45.9 |
| Portage | 56.3 | 37.4 | 111 | -37 | 38.2 | 43.0 |
| Prairie du Chien | 58.1 | 37.8 | 110 | -37 | 37.8 | 37.1 |
| Racine | 54.5 | 41.0 | 107 | -31 | 37.1 | 41.6 |
| Reedsburg | 56.8 | 36.5 | 104 | -42 | 39.7 | n/a |
| Rhinelander | 52.1 | 30.9 | 108 | -42 | 34.2 | 60.1 |
| Rice Lake | 53.2 | 32.5 | 101 | -43 | 30.6 | 51.7 |
| River Falls | 54.3 | 33.6 | 109 | -47 | 31.9 | 41.0 |
| Shawano | 54.4 | 33.8 | 109 | -39 | 33.2 | 49.9 |
| Sheboygan | 54.3 | 38.1 | 108 | -26 | 33.6 | 47.7 |
| Sparta | 56.3 | 35.0 | 106 | -48 | 35.0 | 37.2 |
| St. Croix Falls | 55.7 | 33.3 | 105 | -43 | 29.8 | 37.3 |
| Stevens Point | 53.9 | 34.9 | 108 | -48 | 33.9 | 46.8 |
| Sturgeon Bay | 53.1 | 36.3 | 105 | -29 | 32.7 | 57.5 |
| Superior | 49.5 | 33.7 | 105 | -38 | 30.0 | 51.8 |
| Watertown | 56.1 | 37.2 | 104 | -33 | 37.1 | 37.5 |
| Waupaca | 55.3 | 35.3 | 106 | -41 | 33.6 | 50.5 |
| Wausau | 53.6 | 34.8 | 107 | -40 | 33.9 | 64.6 |
| Whitewater | 56.9 | 36.8 | 102 | -37 | 35.8 | 32.6 |
| Wisconsin Dells | 56.7 | 34.4 | 114 | -43 | 37.0 | 42.0 |