Knoxville

Knoxville Wakes To Chill, Races Toward Sunny 70s Before Stormy Saturday

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Published on April 21, 2026
Knoxville Wakes To Chill, Races Toward Sunny 70s Before Stormy SaturdaySource: Unsplash/Jacob McGowin

Knoxville is waking up on the chilly side this Tuesday, with clear skies and temperatures around 39°F at the KDKX station. The cold start will not last long, though, as afternoon highs are expected to jump to near 77°F under bright, wall-to-wall sunshine.

Afternoon And This Week

Official observations early this morning showed readings in the upper 30s at local sites. From here, the pattern flips to full-on spring: highs near 77°F today and a steady warming trend into the low 80s Wednesday through Friday, with light winds and generally dry conditions, according to the National Weather Service Morristown.

The quiet stretch will not last into the weekend. Rain chances climb late Friday into Saturday, when the best shot for showers and thunderstorms arrives, at about an 80% chance. Forecasters note there is a heightened risk that some storms could be strong. They also point out that the southern half of the area is running roughly 4 to 8 inches below normal for the year, per the NWS forecast discussion.

What To Expect Today

For today, expect mostly sunny skies, light southeast breezes and a comfortable evening, with overnight lows settling in the low to mid 50s.

Pockets of patchy frost were possible in higher terrain earlier today, so gardeners may want to give tender plants a quick checkup. And if you are eyeing outdoor plans for Saturday, keep an umbrella close and stay tuned for updates as the timing and coverage of those storms could still shift.