UPDATE at 1:56 p.m. on 7/27/2026: The National Weather Service cancels the Heat Advisory after severe storms pass through southeast Wisconsin.
MILWAUKEE — The National Weather Service has extended a heat advisory for all of Southeast Wisconsin until 9:00 p.m. on July 27.
Update: Extreme Heat Warning issued for SW/SC WI and a Heat Advisory extended to Lake Michigan for today. Heat Index values of 100-110F are expected today. #wiwx pic.twitter.com/EtGQl0Y3Bf
— NWS Milwaukee (@NWSMilwaukee) July 27, 2026
Heat index values are expected to rise to over 100 degrees, as hot temperatures and high humidity may cause heat illnesses.
