Milwaukee, Wis. – Outdoor workers, athletes and anyone without reliable air conditioning should prepare for increasingly dangerous heat beginning Monday, with the most oppressive conditions arriving Tuesday afternoon when heat index values could climb into the low 100s across parts of southern Wisconsin.
According to the National Weather Service in Milwaukee/Sullivan, heat and humidity will steadily build Monday before peaking Tuesday. Afternoon temperatures are expected to reach the upper 80s to lower 90s Monday with heat index values in the mid-90s to near 100 degrees, while Tuesday brings highs in the low to mid-90s and heat index readings ranging from the upper 90s to as high as 103 degrees. Heat advisories remain possible on both days, especially Tuesday.
Communities including Milwaukee, Madison, Janesville, West Bend, Fond du Lac, Beaver Dam, Sheboygan, Kenosha and Wisconsin Dells are expected to experience the hottest conditions between noon and 7 p.m. Tuesday. The combination of high temperatures and humidity will increase the risk of heat exhaustion for anyone spending extended periods outdoors.
Residents are encouraged to stay hydrated, take frequent breaks in air-conditioned buildings or shaded areas and avoid strenuous outdoor activities during the hottest part of the afternoon. Check on older adults, young children and neighbors without adequate cooling, and never leave children or pets inside parked vehicles.
Some relief is expected after sunset each evening as temperatures fall into the upper 60s and lower 70s, but another hot afternoon is expected Tuesday before cooler conditions gradually return later in the week. Additional heat advisories could be issued if forecast confidence continues to increase.
Five-Day Forecast for Milwaukee, Wisconsin
- Monday: High 89°, Low 77°. Heat index up to 99° during the afternoon.
- Tuesday: High 93°, Low 79°. Heat index peaks around 100°.
- Wednesday: High 91°, Low 76°.
- Thursday: High 89°, Low 78°.
- Friday: High 87°, Low 79°.
