Knoxville is starting Thursday, August 6, near 70 degrees with very humid air and almost no wind at McGhee Tyson Airport. The city should warm quickly under partly sunny skies, reaching about 88 degrees before storms become the main afternoon storyline. Outdoor plans may get a little more complicated after lunchtime.
A slight chance of showers arrives between 9 and 11 a.m., followed by a better chance of showers and thunderstorms from late morning through the afternoon, according to the National Weather Service in Morristown. The most likely window for thunderstorms is roughly 3 to 4 p.m., although scattered showers could linger into the evening.
Storms Build After Lunch
Thursday's rain chance is 60%, with about a tenth to a quarter of an inch possible in spots. Any slow-moving storm could briefly dump heavier rain, produce lightning and gusty winds, or create ponding on roads in low-lying and urban areas.
There are no watches or warnings in effect, and forecasters do not expect a significant severe-weather setup. Still, lightning, sudden downpours and isolated flooding remain practical concerns, so anyone caught outside should head indoors when thunder arrives and avoid driving through water-covered roads.
Heat And Storm Chances Continue Into Next Week
Friday, August 7, brings mostly sunny skies early, a high near 89 degrees and heat-index values as high as 95, with a 30% chance of afternoon storms. Saturday, August 8, looks similar at about 88 degrees with a 50% rain chance, while Sunday, August 9, and Monday, August 10, turn hotter near 90 and 91 degrees with only slight storm chances.
The wetter pattern returns Tuesday, August 11, and Wednesday, August 12, when highs near 90 and 88 degrees come with storm chances of 60% and 70%. In other words, Knoxville gets a few quieter breaks, but the daily summer thunderstorm cycle is not ready to clock out.
