Cincinnati/ Weather & Environment

Foggy Cincinnati Dawn Gives Way to Summerlike Heat Wave, Stormy Weekend Ahead

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Published on September 28, 2026
Foggy Cincinnati Dawn Gives Way to Summerlike Heat Wave, Stormy Weekend AheadSource: Ivan Cheremisin / Unsplash

Cincinnati is waking up to a chilly, clear start Monday, with temperatures around 48 degrees early and pockets of fog in the river valleys. The fog should fade by 9 a.m., making way for sunshine and a high near 77. It is a calm opening to a week that will turn noticeably warmer before rain finally makes a return.

Fog Burns Off Before A Sunny Afternoon

Patchy fog may briefly reduce visibility in low-lying spots early Monday, but north winds of 1 to 5 mph and dry conditions will keep the rest of the day quiet. The National Weather Service office in Wilmington says no watches, warnings or advisories are in effect across its Ohio, Kentucky and Indiana forecast area, according to its latest forecast discussion.

Heat Builds Through Thursday

Tuesday should look much like Monday, with areas of fog before 9 a.m., sun later and a high near 78. Wednesday climbs to 86, and Thursday could reach 89 under mostly sunny skies, with overnight lows rising from the low 50s to the mid-60s.

Rain Chances Return Thursday Night

The dry stretch likely breaks Thursday night, when rain showers become possible after 8 p.m. The chance rises to 60% Friday as showers move through under mostly cloudy skies, with a high near 75.

Showers could remain part of the weekend forecast, with 40% chances Friday night and Saturday, plus another chance Sunday. Saturday and Sunday should be cooler, with highs around 70, so outdoor plans may need a flexible backup as the warm spell gives way to a wetter pattern.