Milwaukee

Milwaukee Faces Dense Fog and Rising Heat Index as NWS Issues Advisory Ahead of Thunderstorms

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Published on July 27, 2025
Milwaukee Faces Dense Fog and Rising Heat Index as NWS Issues Advisory Ahead of ThunderstormsSource: Google Street View

The National Weather Service in Milwaukee issued a Fog Advisory this morning due to areas of dense fog throughout much of the area. The advisory, in effect until 9 a.m., also highlights the expected heat index values, which may soar between 95 and 100 degrees today. Residents are advised to stay hydrated and seek shade when possible to combat the increasing heat.

Looking ahead to tonight, patchy cloud cover is expected with a low around 72 degrees. Winds will shift from the southeast to the southwest after midnight. Tomorrow’s forecast calls for mostly sunny skies with a high near 89 degrees, and a slight chance of thunderstorms developing after 1 a.m., according to the NWS.

The weather pattern remains active through the week, with intermittent thunderstorms possible from Monday morning through Wednesday. Heat index values on Monday are forecast to reach between 100 and 105 degrees, highlighting the intensity of Wisconsin summers. By midweek, a 30 percent chance of showers is expected on Wednesday, along with northeast winds bringing cooler conditions and a high near 73 degrees.

Later in the week, calmer weather is expected. Thursday will bring sunny skies with temperatures around 73 degrees, followed by mostly sunny conditions on Friday with a high near 74 degrees. Saturday is forecast to be mostly sunny with highs near 75 degrees. However, the NWS advises that isolated thunderstorms remain possible.