Tennessee Heat Alert: Temperatures Climb Near 100° in Memphis by Monday, July 21 — Risk of Heat Illness Along I-55 Corridor

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Weather Alert Red Heat Summer Sky Golden Hour
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Memphis, Tenn. – Relentless summer heat is back in full force across Tennessee Monday, July 21, with Memphis heading toward dangerous 100-degree highs and a blistering 110° heat index.

According to the National Weather Service, a Heat Advisory remains in effect from 11 a.m. to 8 p.m. CDT Monday, warning residents of extreme conditions that could lead to heat exhaustion or stroke without proper precautions. Southwest winds will offer little relief as the humidity pushes real-feel temps deep into the danger zone.

Daytime highs in Memphis will reach 98°F Monday, followed by 99°F Tuesday and a scorching 100°F on Wednesday, making it one of the hottest stretches of the summer so far. Travelers along I-40 and I-55 should stay alert for heat-related vehicle issues and never leave pets or children in parked cars.

Those spending time outdoors — especially workers, athletes, and the elderly — should limit exertion between noon and 6 p.m., stay hydrated, and take breaks in shaded or air-conditioned areas.

Looking ahead, the heat will persist through Thursday, with only a slight break expected by Friday, when a 20% chance of isolated thunderstorms could offer brief relief.


🔎 Five-Day Forecast: Memphis, TN (July 21–26)

  • Monday: Sunny and hot, high near 98°F. Heat index up to 110°F.
  • Tuesday: High near 99°F. Mostly clear skies and oppressive humidity.
  • Wednesday: Hottest day of the week — high of 100°F, calm winds.
  • Thursday: Mostly sunny, high around 98°F. Slight evening breeze.
  • Friday: 20% chance of storms. High 97°F. Potential for weekend pattern shift.

⚠️ Next update will follow if additional heat advisories or storm chances are issued.