Middle Tennessee Heat Advisory Warns of 110°F Heat Index Through Tuesday Evening

A heat advisory covering Middle Tennessee warns that the heat index could reach 110°F by Tuesday.

With heat index values potentially hitting 110°F, Middle Tennessee is under an official heat advisory through Tuesday evening — a threshold that can pose serious health risks even for healthy adults. The National Weather Service issued a Minor Heat Advisory covering at least Williamson and Rutherford counties, running from 10 AM Monday through 8 PM CDT Tuesday. By 7 PM on Sunday, temperatures in the region were hovering between 87.6°F and 88.5°F under clear skies, with light southwest winds around 4 mph. Earlier in the day, the mercury topped out at 90.1°F with an overnight low of 76.6°F — warm enough that the heat offers little nighttime relief. The advisory reflects a combination of high air temperatures and humidity that can drive the apparent felt temperature well above the actual thermometer reading. Both Williamson and Rutherford counties, part of the Nashville metro area, are affected.

Why it matters

Heat index values near 110°F can cause heat exhaustion or heat stroke with prolonged outdoor exposure, posing real danger to outdoor workers, the elderly, and those without air conditioning. The advisory covers a densely populated suburban region of Middle Tennessee.

What's next

The advisory remains in effect until 8 PM CDT Tuesday, after which conditions are expected to ease.

Key facts

• Heat advisory runs from 10 AM Monday to 8 PM CDT Tuesday for Middle Tennessee
• Heat index values may reach up to 110°F during the advisory period
• Williamson County recorded a high of 90.1°F and a low of 76.6°F on Sunday
• Evening temperatures at 7 PM were 87.6°F in Williamson County and 88.5°F in Rutherford County
• Southwest winds were light, around 4 mph, with clear skies in both counties
• Both Williamson and Rutherford counties — part of the greater Nashville area — are under the advisory

Bias & framing notes

Both sources are local weather-reporting outlets covering the same advisory and agree closely on all core facts — temperatures, timing, and counties affected. Rutherford Source included the key heat index figure of 110°F, which Williamson Source omitted, making the Rutherford report more informative on the health risk dimension. Neither source offered any dissenting perspective, as weather advisories are non-controversial.

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