Marquette, MI – One more day of dangerous heat is expected across much of Michigan’s Upper Peninsula before a noticeable cooldown arrives during the middle of the week.
According to the National Weather Service in Marquette, Extreme Heat Warnings remain in effect through Tuesday evening for much of the U.P. Afternoon temperatures are expected to climb into the 90s, with some locations approaching 100 degrees for a second consecutive day.
Communities including Marquette, Escanaba, Menominee, Iron Mountain, Ironwood, and Gladstone are expected to experience the hottest conditions during the afternoon, with heat creating an elevated risk of heat-related illnesses.
Forecasters say a slight chance of scattered showers and thunderstorms may develop later Tuesday evening as the heat begins to ease. Overnight temperatures will remain warm, ranging from 62 to 75 degrees, with the warmest readings across southern portions of the Upper Peninsula.
Relief arrives Wednesday as significantly cooler air spreads into the region. High temperatures will range from the upper 70s across the north to the lower 90s in the warmest southern locations, with many communities seeing temperatures much closer to seasonal averages. Wednesday night will be even more comfortable, with lows falling into the upper 50s and 60s.
Until cooler weather arrives, residents are urged to stay hydrated, avoid strenuous outdoor activity during the hottest part of the afternoon, wear lightweight clothing, and check on older adults and others vulnerable to extreme heat. Children and pets should never be left unattended in parked vehicles.
