January weather forecast
Wisconsin, USA

January stands out as the coldest month in Wisconsin, with temperatures often plummeting to extreme lows. In the northern counties, it is not unusual for the mercury to drop to -30°F (-34.4°C), and on occasion, temperatures can even reach a frigid -40°F (-40°C). In contrast, southern regions experience milder but still notably cold conditions. The temperature range for this month usually varies from a low of -10°F (-23.3°C) to a high of 28°F (-2.2°C) in the southern parts of the state.

Compared to December and February, January typically presents the harshest climatic conditions, characterized by the shortest days and limited sunshine. Snowfall is a defining feature, especially in the northern highlands and western uplands, where it adds significantly to the already considerable winter accumulations. The city of Couderay holds the record for the lowest temperature ever recorded in the state, at -55°F (-48.3°C), which occurred on February 2, 1996.

The prevalence of fog is higher in January, often seen in the early mornings across various regions. The duration of snow cover is also at its peak during this month, particularly near Lake Superior where it can last for nearly 140 days throughout the year. In contrast, the south sees shorter durations of snow cover, lasting around 65 days annually.

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• Madison - January »
  January, March, November and December are months with the least rain in Madison when the rain falls for 1.1 days and typically aggregates up to 0.24" (6mm) of rain. January, March, November and December are months with the least rain in Madison when the rain falls for 1.1 days and typically aggregates up to 0.24" (6mm) of rain.
• Milwaukee - January »
  The month with the most snowfall in Milwaukee is January, when snow falls for 6.6 days and typically aggregates up to 1.1" (28mm) of snow. In Milwaukee, during January, snow falls for 6.6 days and regularly aggregates up to 1.1" (28mm) of snow.
• Green Bay - January »
  The month with the least rainfall in Green Bay is January, when the rain falls for 4.6 days and typically collects 1.18" (30mm) of precipitation. In Green Bay in January, it is raining for 4.6 days, with typically 1.18" (30mm) of accumulated precipitation.
• Kenosha - January »
  The most humid month in Kenosha is January, with an average relative humidity of 84%. January stands out as Kenosha's coldest month, with an average high-temperature of 27.7°F (-2.4°C) and a low-temperature of 17.1°F (-8.3°C).
• Racine - January »
  As the calendar flips into a new year, residents of Racine, Wisconsin are greeted with typical winter weather conditions during the month of January. The month with the least sunshine in Racine is January, with an average of 3.6h of sunshine.
• Appleton - January »
  The month with the most snowfall in Appleton is January, when snow falls for 14.2 days and typically aggregates up to 5.79" (147mm) of snow. January, noted for its average high-temperature of 21.9°F (-5.6°C) and an average low-temperature of 10.8°F (-11.8°C), is considered the coldest month in Appleton, Wisconsin.
• Waukesha - January »
  A typical winter month in Waukesha, Wisconsin, January observes a cold climate and regular snowfall. In Waukesha, in January, during 11.2 snowfall days, 1.57" (40mm) of snow is typically accumulated.
• Eau Claire - January »
  The month with the least rainfall in Eau Claire is January, when the rain falls for 2.7 days and typically collects 0.83" (21mm) of precipitation. In Eau Claire in January, snow falls for 13.3 days, with typically accumulated 4.72" (120mm) of snow.
• Oshkosh - January »
  In Oshkosh in January, snow falls for 13.8 days, with typically accumulated 4.76" (121mm) of snow. The months with the lowest UV index in Oshkosh are January, February, November and December, with an average maximum UV index of 1.
• Janesville - January »
  The month with the most snowfall in Janesville is January, when snow falls for 12.5 days and typically aggregates up to 2.83" (72mm) of snow. In Janesville during January, snow falls for 12.5 days and regularly aggregates up to 2.83" (72mm) of snow.
• West Allis - January »
  In West Allis during January, snow falls for 11.6 days and regularly aggregates up to 3.03" (77mm) of snow. January in West Allis is characterized by snowy weather conditions with 11.6 days of snowfall amounting to 3.03" (77mm).
• La Crosse - January »
  The month with the least rainfall in La Crosse is January, when the rain falls for 3.4 days and typically collects 0.91" (23mm) of precipitation. In La Crosse, Wisconsin, in January, snow falls for 11.8 days, with typically accumulated 4.72" (120mm) of snow.