Louisville/ Weather & Environment

Louisville’s Sunny Calm Before Mid-90s Heat Hits Next Week

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Published on August 28, 2026
Louisville’s Sunny Calm Before Mid-90s Heat Hits Next WeekSource: Google Street View

Louisville is starting Friday, August 28, under clear skies near 66 degrees, with some patchy fog possible in spots before sunrise. The fog should lift quickly, giving way to a sunny 87-degree afternoon and a clear, 64-degree night — a brief calm before temperatures climb into the mid-90s next week.

Fog Fades, Then Friday Stays Sunny

The National Weather Service in Louisville says visibility could change quickly in isolated fog pockets this morning, especially before sunrise. Drivers should see conditions improve soon afterward, with light north to northeast winds and essentially no rain expected during the day.

The latest forecast lists no watches, warnings or advisories for the area, according to the National Weather Service. Tonight stays clear and comfortable by summer standards, with temperatures dropping to around 64 degrees.

Weekend Heat Builds Quickly

Saturday remains sunny, with the temperature edging up to about 88 degrees. Sunday brings a bigger jump, with sunshine, light south winds and a high near 93, making outdoor plans feel more like peak summer than a late-August reset.

Midweek Turns Hotter

The heat intensifies Monday through Thursday, with highs near 94 on Monday and temperatures in the low to mid-90s Tuesday through Thursday. The pattern may remain dry through Wednesday, keeping most of the stretch hot and mostly sunny.

According to the National Weather Service in Louisville’s Summer 2023 summary, temperatures reached the 90s each day during that past episode, culminating on the 25th with some locations approaching 100°. The National Weather Service in Louisville reported that the city set 12 record warm temperatures in August 2007, when the monthly average reached 85 degrees versus a normal of 78.9 degrees.

The outlook calls for warmer temperatures next week. Forecasters expect humidity to stay manageable enough to keep heat indices below 105 degrees for most of the period, but residents should still plan for water, shade and regular breaks during afternoon activities.