Knoxville woke up sweating Saturday, July 11, 2026, under muggy, mostly cloudy skies, with temperatures already hanging in the mid-70s and showers drifting across the valley. Forecasters say the city is in for multiple rounds of showers and thunderstorms through the day, with highs climbing into the mid-80s and pockets of heavy rain that could slow commutes. Low-lying streets, small streams and poor-drainage urban spots remain the biggest concern, and a Flood Watch for Knox County stays in effect through Sunday evening.
Storms Today, Flood Watch In Effect
According to the National Weather Service Morristown, a Special Weather Statement issued at 6:43 a.m. EDT Saturday flagged a strong thunderstorm near Oliver Springs that could kick up wind gusts to around 40 mph and produce torrents of rain. The office says today’s storms could wring out 1 to 2 inches of rainfall in some neighborhoods, and periodic rounds through the weekend may trigger flooding where storms repeatedly pass over the same areas.
When To Expect The Heaviest Rain
Showers and thunderstorms are most likely from late morning through the afternoon, with the highest risk lining up around the midday and evening commute. Brief, intense downpours could sharply cut visibility and leave water quickly pooling on roadways. Tonight, the chance of storms lingers, with lighter but still measurable rainfall expected in many spots.
How This Will Affect Your Day
Drivers should plan on slower travel, water covering low-lying streets and the possibility of scattered power outages if gusty storms knock down limbs. If you are outdoors when storms move in, head inside and steer clear of flooded roads. The usual rule applies: turn around, don’t drown. Keep a phone charged and follow guidance from local officials if Flash Flood Warnings are issued.
Looking Ahead
Forecasters expect multiple waves of showers and thunderstorms to hang around through Monday before a more typical summer pattern returns by Tuesday, with lower chances for afternoon storms. For background on recent rounds of heavy rain in the region, see our coverage of street-swamping downpours. We will update readers if any Flash Flood Warnings are issued.
