Knoxville is starting Thursday around 61 degrees under mostly clear skies, but the city is headed for one more summer-like afternoon before the weather turns soggy. Sunshine will drive temperatures up to about 89 degrees, with light north winds and no rain expected.
One More Hot, Dry Day
Thursday night should stay mostly clear, with temperatures falling to around 64 degrees and nearly calm winds. It will be the easiest window for outdoor plans before rain chances begin building Friday afternoon.
Storms Build Friday Through Sunday
Friday will start partly sunny and warm, with a high near 89 degrees. Showers and thunderstorms could develop after 2 p.m., with a 40% chance of rain during the day and a 60% chance Friday night as temperatures dip to around 67.
Saturday turns cooler and wetter, with showers likely before afternoon thunderstorms and a high near 81 degrees. Sunday looks like the soggiest day of the stretch, with showers and thunderstorms likely, a high near 76 and a 90% chance of rain.
Heavy Rain Risk Eases Next Week
The main concern is localized flash flooding if heavy showers repeatedly pass over the same spots, so drivers should never attempt to cross flooded roads.
Heat and Rain in Seasonal Context
According to National Weather Service Morristown, Knoxville's average high for October 1 is 77°F—about 12 degrees below Thursday's forecast high near 89°F. The weekend outlook calls for at least an inch of rain across the area, with some locations potentially receiving 2 to 3 inches.
No watches, warnings or advisories are listed for Knoxville. Rain should clear Monday, followed by partly sunny skies and a high near 77, while Tuesday and Wednesday look mostly sunny with highs around 76 and overnight lows near 50 to 51.
