Knoxville is starting Friday near 64 degrees under calm, very humid conditions, but the thermometer is headed much higher before a rainy weekend takes over. Mostly sunny skies should push the high close to 88 degrees, with showers and thunderstorms becoming more possible late Friday.
Friday Heat Gives Way To Evening Storm Chances
The afternoon will stay mostly sunny through much of the day, with south winds ranging from calm to around 10 mph. The chance of rain rises after 5 p.m., and the National Weather Service puts Friday night's chance of showers and thunderstorms at 50%.
Friday night will turn mostly cloudy with a low near 67 degrees. Rainfall could total between a tenth and a quarter of an inch, though a heavier downpour is possible in a thunderstorm.
Saturday And Sunday Look Increasingly Wet
Saturday brings a cooler high near 82 degrees, mostly cloudy skies and a 50% chance of showers and thunderstorms. The rain chances increase Saturday night, when storms are likely and the low settles near 67 degrees.
Sunday is shaping up as the wettest day of the weekend, with showers and thunderstorms likely throughout the day, an 80% chance of precipitation and a high near 76 degrees. Forecasters say locally heavy rain could create isolated flash-flooding concerns, especially where repeated downpours move over the same area; no severe-weather threat is currently expected.
The broader forecast calls for at least an inch of rain across the region through the weekend, with the heaviest totals more likely south of Interstate 40 and near the higher terrain of the Southern Appalachians. With no watches or warnings posted for Knoxville, the practical move is to keep an eye on road conditions and allow extra time for travel during heavier showers.
Cooler, Drier Weather Returns Monday
The soggy pattern should clear late Sunday into early Monday. Mostly sunny skies return Monday with a high near 79 degrees, followed by cooler nights in the low 50s and mostly sunny conditions through Thursday.
