Nashville August Weather Update: Heat Index Could Hit 106 Saturday, August 16 — Drivers Urged to Stay Hydrated on I-40

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Nashville, Tenn. – Triple-digit heat will grip Middle Tennessee through early next week, threatening outdoor events, road crews, and anyone spending time outside. The National Weather Service warns of heat index values reaching as high as 106 in Nashville by Saturday afternoon. Drivers on major corridors such as I-40, I-24, and I-65 should keep extra water in vehicles and limit travel during peak heat hours.

According to the National Weather Service in Nashville, Saturday will be sunny and hot, with highs near 98 degrees and light northeast winds. By Sunday and Monday, highs will climb to 100 and 101 degrees, keeping the region in a dangerous heat zone. Calm winds mean the heat will feel more oppressive, especially for workers in construction, landscaping, and road maintenance.

Residents should plan outdoor activities for early mornings or evenings, wear light clothing, and check on vulnerable neighbors. Keep pets indoors during the hottest hours. Patchy fog early Friday may also create brief visibility issues for morning commuters before skies turn mostly sunny.

Hot, dry conditions will persist until midweek when a chance for showers and thunderstorms could bring temporary relief. Until then, Nashville and surrounding counties should prepare for sustained heat and the risk of heat-related illness.

Five-Day Forecast for Nashville, Tenn.:
Saturday: Sunny and hot, high 98. Heat index up to 105.
Sunday: Sunny, high near 100. Heat index near 105.
Monday: Sunny, high near 101.
Tuesday: Sunny, high near 100.
Wednesday: 30% chance of showers, high 97.