Showers and thunderstorms are expected to spread across the area through the day, with a 100% chance of rain and a high near 80 before temperatures ease into the upper 70s.
The National Weather Service says slow-moving storms could create a low flash-flood risk across the region, with added concern in areas with already saturated ground. One or two storms could also produce strong wind gusts, so outdoor plans may need a backup, especially in areas with already saturated ground.
Storms Build Through The Afternoon
After a lull, scattered to numerous storms are expected in the early afternoon. The precipitation probability is 100% during the day and 80% Wednesday night.
Wednesday night will remain mostly cloudy, with showers and thunderstorms before and after 10 p.m. The low should settle near 64 degrees, with little wind.
Cooler, Drier Weather Takes Over
Thursday brings a 40% chance of precipitation, with a few showers or scattered light rain possible. The high should reach about 77 degrees, followed by a partly cloudy night near 57.
Friday through Sunday look like the payoff: mostly sunny to sunny skies, highs in the mid- to upper 70s and overnight lows in the low 50s. The stretch offers an early taste of fall rather than a permanent seasonal surrender.
The shift follows Knoxville's recent run of heat and storm chances, including the setup covered in an earlier Hoodline forecast. For Wednesday, the practical advice is simple: expect changing conditions, avoid flooded roads and keep an eye on the sky when storms begin building after lunch.
