Tennessee Weather Alert: Memphis Faces Dangerous Heat Index Near 107° Through Saturday, August 16 – I-40 Travelers Urged to Prepare

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Memphis, Tenn. – Drivers and residents across Memphis should brace for oppressive heat through Saturday, with heat index values reaching a dangerous 107°. Outdoor workers and I-40 travelers face the highest risk of heat-related illness. Hydration and shaded breaks are essential for safety.

According to the National Weather Service, a heat advisory remains in effect until 7 p.m. Friday, with high temperatures near 96° and only slight relief overnight. Saturday’s high will again push 96°, with the heat index climbing above 105°. Calm morning winds will shift slightly by afternoon but won’t offer meaningful cooling.

Sunday will bring even hotter conditions, with highs approaching 99° and mostly sunny skies. Nighttime lows will remain in the upper 70s, offering little overnight recovery. The combination of prolonged heat and high humidity will strain those without access to air conditioning.

The risk of showers and thunderstorms increases slightly by midweek, which could break the heat but also bring lightning and brief downpours. Anyone planning weekend travel should monitor conditions closely and keep emergency water supplies in their vehicle.

Warnings remain in place for all of Shelby County, and additional advisories could be issued if the heat wave persists.

Five-Day Forecast for Memphis, TN
Saturday: Sunny, high 96°, 20% chance of storms after 1 p.m., heat index up to 105°.
Sunday: Mostly sunny, high 99°, light winds.
Monday: Sunny, high 99°, overnight low 77°.
Tuesday: Sunny, high 99°.
Wednesday: 30% chance of storms, high 97°.