Update 7/28/25 @ 8:55 a.m. – The NWS has reduced the predicted heat index for our area from 103 to 101 degrees. Newly added: “A complex of thunderstorms is expected to approach the region late this evening.  These storms are expected to be in a weakening phase as they approach, but may still be capable of producing some strong/severe wind gusts, especially over south-central Wisconsin.  There is above average uncertainty regarding the track and strength of these storms; some details should become clearer by later this afternoon as storms begin to form over South Dakota.”

The National Weather Service [NWS] Milwaukee/Sullivan Weather Forecast Office has issued a Heat Advisory all of Southern Wisconsin for Monday from noon to 8 p.m. Our area is predicted to have a heat index of 101 degrees F during the afternoon and early evening. There is a possibility of thunderstorms and/or cloud cover lingering over our area later into the morning than anticipated, in which case the advisory-level heat indices might be delayed until mid-afternoon.

It is recommended to spend as little time as possible outdoors, and if that is necessary, to be certain to hydrate frequently.