DETROIT, MICHIGAN — Heat indices are spiking into the triple digits across Michigan today, Tuesday, June 30, with feels-like temperatures exceeding 110 degrees in several locations including Menominee at 112 degrees, Oscoda at 110 degrees, and Alpena at 109 degrees. Recent model guidance has trended hotter as a stronger high-pressure system builds into the region, helping suppress storm chances but trading that relief for extreme and dangerous heat.
Dewpoints climbing into the mid-70s are driving the dramatic spike in feels-like temperatures across most of the Lower Peninsula and southern Upper Peninsula. Forecasters emphasize the white shading seen across much of the state on the map represents extreme heat readings, not snow.
Menominee and Southern UP See Most Extreme Heat Index Values
The most extreme heat index reading in the state today is forecast for Menominee, where conditions will feel like 112 degrees, placing it in the brown shaded category reserved for values exceeding 110 degrees. Escanaba follows closely at 100 degrees, with this corner of the southern Upper Peninsula standing out as one of the hottest zones statewide.
Oscoda Detroit and Alpena Face Triple Digit Feels Like Temperatures
Across the northeastern Lower Peninsula and metro Detroit, feels-like temperatures are forecast to reach particularly dangerous levels, with Oscoda hitting 110 degrees and Alpena reaching 109 degrees. Detroit itself will feel like 107 degrees, while nearby Pontiac and St. Clair see 106 and 105 degrees respectively.
Widespread 100 to 109 Degree Heat Index Across Lower Peninsula
The vast majority of the Lower Peninsula falls within the 100 to 109 degree heat index category today, with cities including Lansing at 104, Grand Rapids at 105, Saginaw at 106, Jackson at 103, and Kinderhook reaching 103 degrees. Adrian sees the second-highest reading in the southern Lower Peninsula at 108 degrees.
Lake Michigan Shoreline and Copper Country Offer Relief
For those seeking a break from the extreme heat, the northern shores of Lake Michigan and areas farther north into copper country are showing comparatively cooler readings, including Grand Marais at 97 degrees and Naubinway at a much more comfortable 88 degrees thanks to lake-moderated air.
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