Knoxville is starting Sunday, September 6, with clear skies and temperatures in the low 70s, but the calm morning will not last forever. The city is headed for a high near 92 degrees, with heat index values approaching 99 and a 30% chance of showers and thunderstorms developing after 2 p.m.
Storms Arrive After A Hot, Mostly Sunny Start
Rain chances should stay low through late morning as sunshine pushes temperatures through the 80s. A few showers could pop after 2 p.m., with isolated thunderstorms possible through the afternoon; most of Knoxville should stay dry, but stronger cells may bring brief downpours and gusty winds.
The National Weather Service in Morristown says a slow-moving front will bring slightly cooler air to the region, although the change will be modest. Winds should remain light from the north at 0 to 5 mph, and no watches, warnings or advisories are listed for Knox County in the current forecast.
Labor Day Keeps The Storm Chance Alive
Sunday night should turn partly cloudy with a low near 70. On Labor Day, Monday, September 7, temperatures will reach about 89 under partly sunny skies, with showers and thunderstorms possible during the afternoon and evening and a 40% chance of precipitation.
Tuesday and Wednesday look like the easiest outdoor days, with sunny skies, dry conditions and highs near 91. Storm chances return Thursday and Friday, when afternoon showers and thunderstorms become more likely; the latest outlook is a step down from the hotter setup described in Saturday's Hoodline forecast, but outdoor plans still come with a familiar East Tennessee asterisk.
Plan Around The Heat
Sunday's hottest stretch will arrive during the afternoon, so anyone spending time outside should bring water, take breaks in the shade and keep an eye on the sky. If thunder approaches, head indoors until the storm passes.
