August weather forecast
Wisconsin, USA

August in Wisconsin serves as the summer's closing act, maintaining warmth but signaling a transition to the cooler days of autumn. The temperature in the northern regions generally spans from 55°F (12.8°C) to 75°F (23.9°C), while the southern areas can expect readings from 60°F (15.6°C) to 85°F (29.4°C). While still warm, there's a gradual decline in heat compared to July, as August prepares Wisconsin for the coming fall.

Rainfall in August is often sporadic, featuring less frequent but occasionally intense thunderstorms. The state is still susceptible to flooding, particularly near rivers and lakes. It's also a time when summer drought conditions can develop, particularly in the southern regions where the agriculture sector closely monitors moisture levels.

Cities adjacent to Lake Michigan, including Green Bay and Milwaukee, usually experience a pleasant respite from the heat during the evening hours. The lake continues to temper the climate, creating localized weather patterns that can be cooler and more comfortable than inland conditions.

Daylight starts its decline in August, shortening gradually as the state moves toward autumn. Nonetheless, outdoor activities remain popular, and the state's natural beauty is at a premium with its lakes and forests offering scenic backdrops for recreation.

August is crucial for agriculture, serving as a vital month for the maturation of several key crops, including corn and soybeans. It marks the end of the growing season for certain vegetables and fruits as well, making it a busy time for farmers. The month combines the lingering warmth of summer with a hint of the approaching fall, encapsulating a transitional period that both residents and tourists find appealing for a variety of outdoor endeavors.

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• Madison - August »
  In Madison in August, during 5.4 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. August temperatures vary between a high-temperature of 77.4°F (25.2°C) and a low-temperature of 59.5°F (15.3°C).
• Milwaukee - August »
  August is the month with the warmest seawater in Milwaukee, with an average ocean temperature of 72°F (22.2°C). August is the month with the warmest seawater in Milwaukee, with an average ocean temperature of 72°F (22.2°C).
• Green Bay - August »
  In Green Bay in August, during 14.3 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. June through August, with an average maximum UV index of 5, are months with the highest UV index in Green Bay.
• Kenosha - August »
  August is the month with the warmest seawater in Kenosha with an average ocean temperature of 72.1°F (22.3°C). August is the month with the warmest seawater in Kenosha, with an average ocean temperature of 72.1°F (22.3°C).
• Racine - August »
  The months with the highest UV index in Racine are July and August, with an average maximum UV index of 6. In Racine during August, the rain falls for 12.7 days and regularly aggregates up to 1.14" (29mm) of precipitation.
• Appleton - August »
  On the last day of August, in Appleton sunrise is at 6:15 am and sunset at 7:32 pm CDT. In Appleton, in August, during 12.8 rainfall days, 1.85" (47mm) of precipitation is typically accumulated.
• Waukesha - August »
  The months with the most sunshine in Waukesha are July and August, with an average of 10.2h of sunshine. In Waukesha in August, during 13.2 rainfall days, 1.38" (35mm) of precipitation is typically accumulated.
• Eau Claire - August »
  In Eau Claire, during August, the rain falls for 14.3 days and regularly aggregates up to 2.36" (60mm) of precipitation. In Eau Claire, Wisconsin, in August, during 14.3 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.
• Oshkosh - August »
  In Oshkosh, Wisconsin, during August, the rain falls for 12.9 days and regularly aggregates up to 1.85" (47mm) of precipitation. In Oshkosh, during August, the rain falls for 12.9 days and regularly aggregates up to 1.85" (47mm) of precipitation.
• Janesville - August »
  July and August, with an average of 9.7h of sunshine, are months with the most sunshine in Janesville, Wisconsin. August in Janesville carries on the torch of summer, ensuring warm temperatures, clear skies, and longer daylight hours.
• West Allis - August »
  In West Allis during August, the rain falls for 14.9 days and regularly aggregates up to 2.17" (55mm) of precipitation. In West Allis during August, the rain falls for 14.9 days and regularly aggregates up to 2.17" (55mm) of precipitation.
• La Crosse - August »
  May through August, with an average maximum UV index of 5, are months with the highest UV index in La Crosse, Wisconsin. The months with the most sunshine in La Crosse are July and August, with an average of 9.7h of sunshine.