Best Time to Visit The best time to visit Wisconsin is from May to October. However, experiencing a typical continental climate with loads of moisture in the air, Wisconsin is a state offering agreeable weather all year long. Cloudy skies are present for most of the year. The local climate varies significantly with geography. For example, if you go from north to south, the weather transitions from pleasantly warm to notably hot. The region around water bodies, like Great Lakes, are cooler and have microclimates of their own which differ slightly from their adjoining areas. A wet spell grips the state during the transitional period between spring and summer. The melting snow of winter also causes flooding in some parts. Summer months are warm, sunny and sweaty, with the mercury rarely rising above 90 degrees Fahrenheit. Autumn brings in vibrant foliage and lesser crowds. Winters are the roughest period of the year with chilly winds, foggy mornings and heavy snowfalls. However, despite the freezing temperatures, it is a great time to go snowboarding or enjoy skiing in its winter wonderland.