National Weather Service United States Department of Commerce

6/27/26 4 PM Update - After pleasant conditions with comfortable humidity on Sunday, look for hot and very humid conditions arriving Monday. The heat and humidity will continue through the week with heat indices around 100 degrees. Additionally, there is chance for afternoon showers and storms Sunday afternoon and Sunday night. Some of the storms Sunday night may be strong to severe. There are periodic chances of thunderstorms next week, some which could be strong or severe at times.
6/27/26 4 PM Update - High temperatures are expected to rise into the upper 80s to middle 90s on Monday away from Lake Michigan. With the surge of very humid conditions, afternoon heat indices may reach 105 degrees across central into northeast WI. Be sure to take precautions to beat the heat, including drinking plenty of water and wearing lightweight loose clothing. And, never leave kids or pets unattended in vehicles, even if for just a few minutes!
6/27/26 4 PM Update - Isolated strong to severe storms are possible Sunday night, especially over northern WI. The primary risks will be large hail, damaging winds and locally heavy rain.