Wednesday, June 24, 2026, started on a murky note in Knoxville, with patchy fog, early readings near 59°F, and barely a hint of wind. Visibility dropped in the river valleys and put the brakes on the morning drive in a few spots, but the haze is expected to burn off by mid-morning. Once it lifts, mainly sunny skies should take over and send afternoon temperatures up to around 83°F.
Foggy Start, Sunny Afternoon
According to the National Weather Service Morristown, patchy fog will hang on across low-lying areas through the early commute before clearing out by mid-morning. Behind it, mostly sunny skies are on tap with a high near 83°F on Wednesday. Tonight is expected to be partly cloudy with a low around 63°F, and Thursday, June 25, 2026, should warm into the upper 80s.
Forecast guidance points to showers and thunderstorms returning late Friday, June 26, 2026, and into Saturday, June 27, 2026, with gusts in stronger cells possibly reaching 20–25 mph. After that, a warmer, drier stretch sets up early next week, with Monday and Tuesday (June 29–30, 2026) projected to climb into the low-to-mid 90s.
Plan Outdoor Plans With A Backup
If you have outdoor events lined up for Friday or Saturday, it is smart to line up an indoor backup and secure tents and loose items, since late-afternoon storms can bubble up quickly and bring heavy rain and gusty winds. For more background on the evolving pattern, see our earlier report on the Father's Day heat and crashing storms.
Quick Tips For Drivers
On foggy stretches, slow down and stick with low beams, and build in extra time for the commute through shaded hollows and river valleys where visibility can stay poor longer than elsewhere. Later in the week, as storm chances ramp up, keep an eye on live radar or weather alerts on your phone in case warnings pop up. If you are planning weekend outdoor activities, check the forecast Friday morning and be ready to move plans indoors if thunder shows up.
