Detroit, Michigan – High humidity and the risk of dangerous thunderstorms will grip southeast Michigan through the weekend, bringing threats of lightning, heavy rain, and damaging winds to cities including Detroit, Ann Arbor, and Monroe.
According to the US National Weather Service in Detroit, the main storm threat arrives Saturday between 2 p.m. and midnight, moving southwest to northeast at speeds up to 30 mph. Marginally severe storms could unleash locally damaging wind gusts, dangerous lightning, and heavy rainfall—especially south of I-69. Detroit, Ann Arbor, Howell, and Monroe face the greatest risk for severe weather and isolated flooding during this window.
Today’s high temperatures will climb into the mid-80s for most of the region, with slightly less humidity near the Tri Cities and Thumb. The weekend brings increasing moisture, with highs near 90°F by Sunday and heat indices even higher. Residents in Saginaw, Pontiac, and Port Huron should prepare for quick changes: afternoon and evening thunderstorms may cause sudden downpours and ponding on local roads.
Drivers are urged to monitor alerts, avoid flooded roadways, and have multiple ways to receive warnings. Charge mobile devices and secure outdoor items ahead of the storms. This is southeast Michigan’s most widespread severe risk so far this July.
Thunderstorm watches or further advisories remain possible through Sunday evening as conditions evolve.
