Wisconsin Weather: Heat Index To Approach 100 This Week

MILWAUKEE, WI — Daytime temperatures in the 90s and heat index temperatures approaching 100 degrees are in store this week in Wisconsin, according to the National Weather Service.

According to the NWS, southeastern Wisconsin will see heat indices ranging between 88 in Port Washington to 95 in Janesville on Tuesday. By Wednesday, those temperatures increase to 91 in Racine to 97 in Janesville, Portage and Berlin. On Thursday, the heat really sets in with heat indices ranging from 96 in Milwaukee to 97 in Waukesha.

What Is Heat Index?

According to the NWS, heat index is what the temperature feels like to the human body when relative humidity is combined with the air temperature.

"This has important considerations for the human body's comfort. When the body gets too hot, it begins to perspire or sweat to cool itself off. If the perspiration is not able to evaporate, the body cannot regulate its temperature," the NWS stated.

Forecast

Tuesday

A 40 percent chance of showers and thunderstorms, mainly after 1 p.m. Mostly sunny, with a high near 89. Calm wind becoming west around 5 miles per hour in the afternoon.

Tuesday Night

A 20 percent chance of showers and thunderstorms before 1 a.m. Partly cloudy, with a low around 70. Calm wind.

Wednesday

Mostly sunny and hot, with a high near 93. Calm wind becoming south around 5 miles per hour in the afternoon.

Wednesday Night

Mostly clear, with a low around 73. South wind around 5 miles per hour becoming calm in the evening.

Thursday

Showers and thunderstorms likely, mainly after 1 p.m. Partly sunny and hot, with a high near 91. Calm wind becoming southwest around 5 miles per hour in the morning. Chance of precipitation is 60 percent. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southwest wind around 5 miles per hour becoming calm.

Friday

A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.