Knoxville, Tennessee Weather:
Monday, September 21, 2026
Sunny with a Chance of Thunderstorms
Day 88°
Night 66°
Precipitation 70 %
Wind 4 mph
UV Index (0 - 11+) 3
Weather Forecast History
Last Year's Weather on This Day (September 21, 2025)
Cloudy Night

Day

90°

Night

64°

Wind

4 mph

Precipitation

40 %