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    • How hot will it be in Milwaukee today during the heat alert?
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    How hot will it be in Milwaukee today during the heat alert?

    Vaseline Posted on

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    The beginning of this week will be warm.

    Milwaukee County is under a heat warning today, while most of southern inland Wisconsin is under an extreme heat warning. Daytime highs in the low to mid 90s are expected across the region, with humidity pushing heat indices close to or near 100 degrees.

    Tuesday is expected to remain warm, with much of the southern part of the state currently under an extreme heat warning.

    “Tomorrow could be just as warm, or even warmer than today, but the threat is conditional,” said Benjamin Sheppard, a meteorologist with the Milwaukee-Sullivan National Weather Service. “And what I mean by conditional is we have the potential for some clouds to disrupt those temperatures and make them cooler. But if the skies remain mostly clear tomorrow, we could have similar heat indices, up to 110 (degrees).”

    Here’s what you need to know about the potentially record-breaking heat.

    How hot will it be in Milwaukee this week?

    On Monday, the city of Milwaukee is expected to see a high of nearly 32 degrees Celsius, with temperatures peaking between 1:00 p.m. and 6:00 p.m. Milwaukee is under an extreme heat warning from 1:00 p.m. to 8:00 p.m. Temperatures could even reach 34 degrees Celsius in the afternoon.

    Things are expected to get even warmer farther from Lake Michigan. Walworth and Jefferson counties, as well as counties farther west including Dane County, are under an extreme heat advisory from 1 p.m. to 8 p.m. today. Temperatures are forecast to be in the mid-90s, with heat indices as high as 105 and 106 degrees in some communities including Madison, Lake Geneva and Janesville.

    Most of southern Wisconsin is under an extreme heat warning Tuesday; this could change to a heat advisory or an extreme heat warning depending on cloud cover tomorrow. A high temperature of 91 degrees is currently forecast for Milwaukee, with heat indices of over 100 degrees between 2 p.m. and 5 p.m.

    Temperatures are expected to warm up further inland, with heat indices reaching 110 degrees in some communities in south-central Wisconsin.

    The next two days could be Milwaukee’s hottest of the year, tying records for daily temperatures. The city’s record high of 96 degrees on Aug. 26 was set in 1953, and the record high of 99 degrees on Aug. 27 was set in 1973, according to NWS data. Record temperatures are even more likely in Madison this week, Sheppard said, where the record highs on Aug. 26 and 27 are 95 degrees ― which is also the forecast high for Tuesday.

    The state is expected to return to near-normal conditions by Wednesday after a cold front moves through Tuesday night into Wednesday, Sheppard said. Daytime highs in Milwaukee are expected in the low 80s.

    “The winds behind that front are expected to … shift to the northeast Wednesday afternoon,” Sheppard said. “So the winds are basically moving off Lake Michigan across Milwaukee, and that’s going to make it feel a lot cooler and make it a lot cooler.”

    Why is it so hot in Milwaukee this week?

    There is currently a pattern in the jet stream known as a “ridge,” Sheppard explained. A ridge is an elongated area of ​​relatively high atmospheric pressure that brings warm, moist weather.

    The ridge is currently directly over Wisconsin. “What that essentially does is it causes really warm, really moist air from the south to linger in our region, and the sun drives those temperatures up to really uncomfortable levels,” Sheppard said.

    Will there be storms in Wisconsin this week?

    Severe thunderstorms are possible in southern Wisconsin Monday and Tuesday night, although NWS is currently unsure where exactly they will strike. If the storms reach southern Wisconsin Tuesday night, hail and high winds are possible, Sheppard said.

    The forecast currently shows a 30% chance of rain and thunderstorms at 4 p.m. Tuesday in Milwaukee, rising to a 45% chance by 7 p.m.

    Hot Weather Safety Tips

    Hot weather can cause heat-related illness and even death. The Milwaukee Health Department and Centers for Disease Control and Prevention offer these hot weather safety tips:

    • Take it easy and limit your physical activity.
    • Spend time in air-conditioned areas such as shopping malls, movie theaters, or libraries.
    • Do not leave children or pets in a parked car. Temperatures can become life-threatening within minutes.
    • Wear light, loose and light-colored clothing.
    • Take cool baths or showers. Use wet towels on your skin to cool down.
    • Do not rely on fans as the primary cooling equipment.
    • Drink enough water.
    • Avoid consuming caffeinated or alcoholic beverages as these may enhance the warming effect.

    Wisconsin weather radar

    Wisconsin Weather Warnings

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