May weather forecast
Wisconsin, USA

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Flag of Wisconsin, USA

Weather in May

May serves as a robust introduction to the warm seasons in Wisconsin, as the state fully embraces spring. Northern regions experience temperatures ranging from 40°F (4.4°C) to 65°F (18.3°C), while in the southern areas, the mercury typically reads from 50°F (10°C) to 75°F (23.9°C). This significant warming trend compared to April often results in comfortable outdoor conditions.

Precipitation during May shifts primarily to rainfall, making it one of the wettest months of the year. Thunderstorms become increasingly frequent, particularly in the southern and eastern areas of the state. The rain contributes to a vibrant natural landscape, enriching Wisconsin's farmlands, forests, and river valleys. May rainfall also heighten the risk of flooding, particularly in low-lying areas near rivers and lakes.

In terms of daylight, May offers significantly longer hours, a transition that is welcomed by both outdoor enthusiasts and those engaged in agricultural activities. Unlike April, May in Wisconsin rarely experiences snow, even in the northern highlands and western uplands.

Cities near Lake Michigan, including Milwaukee and Green Bay, continue to feel the lake’s moderating influence. Here, temperatures are generally cooler compared to inland areas, particularly during the evenings. Although the lake effectively moderates extremes, it can also create conditions conducive to sudden, localized weather changes.

May serves as an important agricultural period for the state, as the increased temperatures and extended daylight offer optimal growing conditions. Despite being one of the wetter months, the overall climatic conditions make it a favorable time for outdoor activities and agricultural pursuits. Thus, May stands as a transition from the unpredictable weather of spring to the more stable, warmer conditions that define the Wisconsin summer.

  • Madison - May »
    On the last day of the month, in Madison, Wisconsin, sunrise is at 5:21 am and sunset at 8:29 pm CDT. In Madison in May, during 6.6 rainfall days, 0.59" (15mm) of precipitation is typically accumulated.
  • Milwaukee - May »
    In Milwaukee, during the entire year, the rain falls for 75.6 days and collects up to 5.83" (148mm) of precipitation. On the last day of May, in Milwaukee, sunrise is at 5:15 am and sunset at 8:23 pm CDT.
  • Green Bay - May »
    On the last day of the month, in Green Bay, sunrise is at 5:10 am and sunset at 8:28 pm CDT. In Green Bay during the entire year, snow falls for 63.7 days and aggregates up to 23.27" (591mm) of snow.
  • Kenosha - May »
    In Kenosha during May, the rain falls for 18.1 days and regularly aggregates up to 3.27" (83mm) of precipitation. During 0.2 snowfall days, in May, Kenosha aggregates 0.08" (2mm) of snow.
  • Racine - May »
    On the last day of the month, in Racine, sunrise is at 5:16 am and sunset at 8:21 pm CDT. May is the last month it regularly snows in Racine, Wisconsin.
  • Appleton - May »
    The month with the most rainfall in Appleton is May, when the rain falls for 15.9 days and typically aggregates up to 3.54" (90mm) of precipitation. In Appleton during May, the rain falls for 15.9 days and regularly aggregates up to 3.54" (90mm) of precipitation.
  • Waukesha - May »
    On the first day of May in Waukesha sunrise is at 5:46 am and sunset at 7:53 pm. In Waukesha, in May, during 13.1 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.
  • Eau Claire - May »
    In Eau Claire, Wisconsin, in May, it is raining for 16.8 days, with typically 3.46" (88mm) of accumulated precipitation. During 0.7 snowfall days, in May, Eau Claire aggregates 0.43" (11mm) of snow.
  • Oshkosh - May »
    The month with the most rainfall in Oshkosh is May, when the rain falls for 15.3 days and typically aggregates up to 3.62" (92mm) of precipitation. The month with the most rainfall in Oshkosh is May, when the rain falls for 15.3 days and typically aggregates up to 3.62" (92mm) of precipitation.
  • Janesville - May »
    In Janesville during May, the rain falls for 16 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Janesville, during the entire year, the rain falls for 127.7 days and collects up to 17.87" (454mm) of precipitation.
  • West Allis - May »
    Throughout the year, in West Allis there are 126 rainfall days, and 19.37" (492mm) of precipitation is accumulated. In May, West Allis truly moves into spring, with warming temperatures welcoming the comprehensive range of outdoor activities the city provides.
  • La Crosse - May »
    On the last day of the month, in La Crosse, sunrise is at 5:26 am and sunset at 8:39 pm CDT. Throughout the year, in La Crosse, Wisconsin, there are 129.3 rainfall days, and 26.42" (671mm) of precipitation is accumulated.
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Wisconsin, USA

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