On the morning of Sunday, September 20, 2026, Nashville was reported as having a few clouds and a temperature of 77°F. One more near-100-degree day is ahead before temperatures cool. The forecast calls for a high near 99, with heat-index values reaching 104 and a Heat Advisory remaining in effect through 7 p.m. Sunday.
Sunday Brings Another Round Of Dangerous Heat
Sunday will be hot. The National Weather Service lists the local high near 99.
The afternoon is a poor match for long stretches of yardwork, exercise or time in direct sun. Residents should stay hydrated, seek shade or air conditioning and limit outdoor activity during the hottest part of the day. Anyone showing signs of heat stroke should be moved to a cool place and treated as an emergency by calling 911.
Monday Starts The Slow Exit From Summer Heat
Monday will still feel like summer, with a high near 97. A chance of showers arrives Monday night, when temperatures drop to around 71.
Showers Arrive Before Cooler Air
Tuesday brings a better chance of showers, while the high slips to about 90.
Wednesday is expected to feature highs in the lower 80s.
Sunday Heat Safety
Drink plenty of fluids, take frequent breaks in shade or air conditioning and check on older neighbors, children and anyone working outdoors.
