Knoxville is waking up to a mostly cloudy, muggy Tuesday with temperatures hovering around 68°F. Showers are expected to push into the area by mid- to late morning and become scattered to widespread by midday, with a high near 81°F on Tuesday, May 26, 2026. Lightning and brief heavy downpours during the afternoon could slow commutes and soak any outdoor plans that were hoping to stay dry.
When The Heaviest Rain Comes
According to the National Weather Service in Morristown, rain is possible before 11 a.m., with showers and thunderstorms most likely between about 11 a.m. and 2 p.m. Overall rain chances run about 70–80%, with new rainfall amounts generally expected between a tenth and a quarter of an inch. This setup follows what rolled through on Memorial Day — see the stormy Memorial Day forecast for a look at how things developed overnight.
Commute And Outdoor Plans
Plan on wet roads, slower travel and localized ponding on low-lying streets during and after the stronger cells move through. If you have outdoor events this afternoon, shift them under cover where you can, and avoid driving through standing water — just a few inches is enough to stall a car and turn a quick errand into a headache.
Rest Of The Week
Rain and thunder chances stay elevated through Thursday, with highs generally in the upper 70s to low 80s, before a drier airmass begins to nudge in later in the week. That should open a better window for outdoor chores and events by the weekend, though isolated showers may still try to hang on into early next week.
