LOUISVILLE, Ky. – Louisville residents will bake under sweltering heat through Tuesday, with heat index values pushing as high as 103 degrees before thunderstorms return midweek. The National Weather Service warns the combination of extreme heat and high humidity could strain power systems and increase the risk of heat-related illness.
According to the National Weather Service in Louisville, Tuesday’s high will reach near 96 with light winds offering little relief. Storm chances increase late Tuesday night into Wednesday, with scattered thunderstorms expected to break the heat and bring temporary cooling. A 30 percent chance of storms will linger through Wednesday night, keeping skies unsettled.
The greatest impacts will be felt in Jefferson County and surrounding areas, where utility crews are bracing for possible outages if storms knock down power lines. Commuters should also be prepared for slick roads and brief delays Wednesday afternoon. Residents are urged to stay hydrated, avoid strenuous outdoor activity, and check on vulnerable neighbors during peak afternoon heat.
Conditions begin to improve by Thursday as highs dip closer to 90 degrees with mostly sunny skies returning. Still, forecasters caution that heat and humidity will remain elevated into next weekend.
Five Day Forecast for Louisville, KY
- Tuesday: Sunny, high near 96. Heat index values up to 103. Slight chance of storms late.
- Wednesday: 30% chance of showers and storms after 11 a.m. High near 90.
- Thursday: Mostly sunny, high near 90. Low around 69.
- Friday: Sunny, high near 92.
- Saturday: Sunny, high near 91. Low near 66.
