Do you need to know, when is the best time to go to Wisconsin? Then you should take a look here, what weather you can expect there during the year.
Wisconsin is part of USA - United States of America. The climate of USA is very varied, as United States of America is a large country. The climate is mostly temperate, but tropical in Hawaii and Florida, and arctic in Alaska. This is not all. The climate is semiarid in the great plains west of the Mississippi River, and arid in the Great Basin of the southwest. You can expect low winter temperatures in the northwest, but they are sometimes moderated in January and February by warm winds. Winters in the south are warmer. Don? forget, that temperatures are usually significantly lower in mountains.
When speaking about the usual weather in this area, the information is relevant for example for these popular places: Altoona, Apostle Islands National Lakeshore, Appleton, Ashland, Augusta, Baileys Harbor, Baldwin, Baraboo, Baraboo River Valley, Bayfield, Beloit, Brookfield, Brown Deer, Camp Douglas, Cedarburg, Chippewa Falls, Coloma, Columbus, Cornucopia, Coulee Region, Delafield, Delavan, Denmark, Dodgeville, Door County, Eagle, Eagle River, Eau Claire, Elkhart Lake, Elkhorn, Ellsworth, Ephraim, Fish Creek, Fond du Lac, Freedom, Grafton, Greater Madison Area, Green Bay, Green County, Green Lake, Horicon Marsh, Hudson, Hurley, Janesville, Johnson Creek, Kenosha, Kenosha County, Kettle Moraine State Forest, La Crosse, Ladysmith, Lake Geneva, Ledgeview, Madeline Island, Madison, Manitowoc, Menomonie, Milwaukee, Necedah, Neillsville, New Berlin, New Glarus, Newburg, North Central Wisconsin, Northeast Wisconsin, Northwest Wisconsin, Oshkosh, Osseo, Pepin, Pewaukee, Plymouth, Port Washington, Portage, Prairie du Chien, Prairie du Sac, Prescott, Racine, Rhinelander, Rice Lake, Richfield, Richland Center, Richmond, Ripon, River Falls, Rock County, Rudolph, Sheboygan, Slinger, Soldiers Grove, Southeast Wisconsin, Southern Wisconsin River Valley, Southwest Wisconsin, Sparta, Spooner, Spring Green, Spring Valley, St. Croix Falls, Stevens Point, Stockholm, Stoughton, Sturgeon Bay, Superior, Tomah, Two Rivers, Verona, Walworth County, Washburn, Waukesha, Waupaca, Wausau, Wauwatosa, West Allis, West Bend, Whitewater, Williams Bay, Wisconsin Dells.
Let's look now what weather you can expect in the area around Madison and in many other cities. The warmest month here is July, the average maximum temperature is 27.1 ℃ (80.78 ℉). The average minimum temperature in this month is 16.1 ℃ (60.98 ℉). The coldest month here is January, the average maximum temperature is -2.8 ℃ (26.96 ℉). The average minimum temperature in this month is -11.3 ℃ (11.66 ℉). The most rainy month here is April, the average number of rainy days is 12.1. The least rainy month here is August, the average number of rainy days is 9.3. 
When travelling around Wisconsin, always consider the altitude of the the place as well. We should remind you, that the highest point in USA - United States of America is Denali (Mount McKinley) (6190 m) and the lowest point is Death Valley (-86 m). So there are huge differences in altitudes in this country and the weather is very different in them therefore. Keep in mind, that the temperature usually decreases by 1.2 - 1.9 ℃ (2.2 - 3.5 ℉) per 200 m (656 ft), depending on the other conditions. (And we should add, that in the very special condition named thermal inversion even the temperature may be higher in higher altitudes.)
Typical (usual) weather in Wisconsin in January is this: The average highest temperature in Wisconsin in January is -2.8 ℃ (26.96 ℉). The average lowest temperature is -11.3 ℃ (11.66 ℉). At the beginning of January you can expect higher temperatures, the average highest temperature is around -1.8 ℃ (28.76 ℉). At the end of January you can expect higher temperatures, the average highest temperature is around -1.55 ℃ (29.21 ℉). The average number of rainy days in January is 10.2. The average rainfall is 31.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 9:02 (hours and minutes), in the middle of the month 9:21 and at the end of the month 9:51.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Wisconsin in February is this: The average highest temperature in Wisconsin in February is -0.3 ℃ (31.46 ℉). The average lowest temperature is -9.2 ℃ (15.44 ℉). At the beginning of February you can expect lower temperatures, the average highest temperature is around -1.55 ℃ (29.21 ℉). At the end of February you can expect higher temperatures, the average highest temperature is around 2.95 ℃ (37.31 ℉). The average number of rainy days in February is 9.4. The average rainfall is 36.8 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 9:51 (hours and minutes), in the middle of the month 10:30 and at the end of the month 11:12.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in Wisconsin in March is this: The average highest temperature in Wisconsin in March is 6.2 ℃ (43.16 ℉). The average lowest temperature is -3.9 ℃ (24.98 ℉). At the beginning of March you can expect lower temperatures, the average highest temperature is around 2.95 ℃ (37.31 ℉). At the end of March you can expect higher temperatures, the average highest temperature is around 10.2 ℃ (50.36 ℉). The average number of rainy days in March is 10.5. The average rainfall is 56.6 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:12 (hours and minutes), in the middle of the month 11:56 and at the end of the month 12:40.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in Wisconsin in April is this: The average highest temperature in Wisconsin in April is 14.2 ℃ (57.56 ℉). The average lowest temperature is 2.3 ℃ (36.14 ℉). At the beginning of April you can expect lower temperatures, the average highest temperature is around 10.2 ℃ (50.36 ℉). At the end of April you can expect higher temperatures, the average highest temperature is around 17.15 ℃ (62.87 ℉). The average number of rainy days in April is 12.1. The average rainfall is 87 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:40 (hours and minutes), in the middle of the month 13:24 and at the end of the month 14:04.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Wisconsin in May is this: The average highest temperature in Wisconsin in May is 20.1 ℃ (68.18 ℉). The average lowest temperature is 7.9 ℃ (46.22 ℉). At the beginning of May you can expect lower temperatures, the average highest temperature is around 17.15 ℃ (62.87 ℉). At the end of May you can expect higher temperatures, the average highest temperature is around 22.8 ℃ (73.04 ℉). The average number of rainy days in May is 12.1. The average rainfall is 89.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 14:04 (hours and minutes), in the middle of the month 14:40 and at the end of the month 15:06.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in Wisconsin in June is this: The average highest temperature in Wisconsin in June is 25.5 ℃ (77.9 ℉). The average lowest temperature is 13.7 ℃ (56.66 ℉). At the beginning of June you can expect lower temperatures, the average highest temperature is around 22.8 ℃ (73.04 ℉). At the end of June you can expect higher temperatures, the average highest temperature is around 26.3 ℃ (79.34 ℉). The average number of rainy days in June is 11. The average rainfall is 114.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 15:06 (hours and minutes), in the middle of the month 15:21 and at the end of the month 15:20.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Wisconsin in July is this: The average highest temperature in Wisconsin in July is 27.1 ℃ (80.78 ℉). The average lowest temperature is 16.1 ℃ (60.98 ℉). At the beginning of July you can expect lower temperatures, the average highest temperature is around 26.3 ℃ (79.34 ℉). At the end of July you can expect lower temperatures, the average highest temperature is around 26.7 ℃ (80.06 ℉). The average number of rainy days in July is 10.3. The average rainfall is 106.1 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 15:20 (hours and minutes), in the middle of the month 15:05 and at the end of the month 14:38.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Wisconsin in August is this: The average highest temperature in Wisconsin in August is 26.3 ℃ (79.34 ℉). The average lowest temperature is 14.9 ℃ (58.82 ℉). At the beginning of August you can expect higher temperatures, the average highest temperature is around 26.7 ℃ (80.06 ℉). At the end of August you can expect lower temperatures, the average highest temperature is around 24.55 ℃ (76.19 ℉). The average number of rainy days in August is 9.3. The average rainfall is 110.5 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 14:38 (hours and minutes), in the middle of the month 14:02 and at the end of the month 13:22.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Wisconsin in September is this: The average highest temperature in Wisconsin in September is 22.8 ℃ (73.04 ℉). The average lowest temperature is 10.4 ℃ (50.72 ℉). At the beginning of September you can expect higher temperatures, the average highest temperature is around 24.55 ℃ (76.19 ℉). At the end of September you can expect lower temperatures, the average highest temperature is around 18.85 ℃ (65.93 ℉). The average number of rainy days in September is 9.4. The average rainfall is 78.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 13:22 (hours and minutes), in the middle of the month 12:40 and at the end of the month 11:56.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Wisconsin in October is this: The average highest temperature in Wisconsin in October is 14.9 ℃ (58.82 ℉). The average lowest temperature is 4 ℃ (39.2 ℉). At the beginning of October you can expect higher temperatures, the average highest temperature is around 18.85 ℃ (65.93 ℉). At the end of October you can expect lower temperatures, the average highest temperature is around 10.9 ℃ (51.62 ℉). The average number of rainy days in October is 10. The average rainfall is 60.9 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:56 (hours and minutes), in the middle of the month 11:12 and at the end of the month 10:30.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Wisconsin in November is this: The average highest temperature in Wisconsin in November is 6.9 ℃ (44.42 ℉). The average lowest temperature is -1.9 ℃ (28.58 ℉). At the beginning of November you can expect higher temperatures, the average highest temperature is around 10.9 ℃ (51.62 ℉). At the end of November you can expect lower temperatures, the average highest temperature is around 3.05 ℃ (37.49 ℉). The average number of rainy days in November is 10.6. The average rainfall is 61 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 10:30 (hours and minutes), in the middle of the month 9:52 and at the end of the month 9:22.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Wisconsin in December is this: The average highest temperature in Wisconsin in December is -0.8 ℃ (30.56 ℉). The average lowest temperature is -8.9 ℃ (15.98 ℉). At the beginning of December you can expect higher temperatures, the average highest temperature is around 3.05 ℃ (37.49 ℉). At the end of December you can expect lower temperatures, the average highest temperature is around -1.8 ℃ (28.76 ℉). The average number of rainy days in December is 10.1. The average rainfall is 44.8 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 9:22 (hours and minutes), in the middle of the month 9:03 and at the end of the month 8:59.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.| Green Bay | temperature: - | highest temperature: -1.7 ℃ (28.94 ℉) | lowest temperature: -9.6 ℃ (14.72 ℉) | rainfall: 37.7mm | rainy days: 10.5 |
| Madison | temperature: - | highest temperature: -0.8 ℃ (30.56 ℉) | lowest temperature: -8.9 ℃ (15.98 ℉) | rainfall: 44.8mm | rainy days: 10.1 |
| Milwaukee | temperature: - | highest temperature: 0.6 ℃ (33.08 ℉) | lowest temperature: -6.4 ℃ (20.48 ℉) | rainfall: 50.6mm | rainy days: 10.9 |
| Kenosha | temperature: - | highest temperature: 1.5 ℃ (34.7 ℉) | lowest temperature: -6.1 ℃ (21.02 ℉) | rainfall: 52.5mm | rainy days: 9.5 |
| Racine | temperature: - | highest temperature: 1.1 ℃ (33.98 ℉) | lowest temperature: -6.2 ℃ (20.84 ℉) | rainfall: 55.1mm | rainy days: 10.1 |