Hot and humid days settle in across Michigan
Tuesday, July 15, 2025, begins with classic mid-July heat across Michigan, setting the stage for a week that feels every bit like deep summer. Temperatures today are climbing to around 90°F (32°C) across much of the state, paired with rising humidity that makes the air feel even heavier. This summer-like pattern is expected to stay locked in, at least through the end of the month.
Wednesday could bring severe thunderstorms
While many in Michigan will enjoy the warmth and sun through Wednesday afternoon, a vigorous line of thunderstorms is developing and could sweep through by Wednesday evening into the overnight hours. A disturbance now crossing the Dakotas and Minnesota is on track to reach the region, potentially triggering strong to severe thunderstorms, particularly across the western Upper Peninsula. Forecasts show a 2% chance for isolated tornadoes and a 15% probability of damaging winds and large hail in that region. This weather system could surprise some areas with its intensity, especially if the complex remains well-organized as it crosses into northern Lower Michigan.
A cool-down follows the midweek storms
After the thunderstorms rumble through late Wednesday night into Thursday morning, a cold front will sweep in, bringing brief but welcome relief from the muggy air. The most noticeable changes will be felt across northern and western Michigan. In areas like Traverse City, high temperatures on Friday are expected to top out in the low to mid-70s°F (21–24°C). That’s a notable change from the heat wave dominating earlier in the week. Meanwhile, southeastern Michigan, including Detroit, Flint, and Ann Arbor, will remain warm and sticky into Thursday, but some overnight cooling should offer slight comfort.
Late July sets up for more heat
Looking ahead, forecast models are pointing toward a strong ridge of high pressure building over the central U.S. beginning in the final week of July and continuing into early August. The Climate Prediction Center’s latest 6–10 and 8–14 day outlooks show above-average temperatures lasting through at least July 28. Michigan sits on the northeast edge of this developing heat dome, which means temporary cool-downs are possible when cold fronts push through, but overall, the heat is here to stay for a while.
So for those who love true Great Lakes summer weather, this pattern is delivering. With a mix of intense heat, occasional relief, and the threat of severe storms, Michigan’s summer is living up to its reputation.
