Downtown Knoxville Weather Forecast

    • 70
    • 92

    Increasing Clouds

    • 71
    • 94

    Chance Rain Showers

    • 70
    • 89

    Rain Showers

    • 68
    • 90

    Slight Chance Thunderstorms

    • 68
    • 90

    Mostly Sunny

    • 69
    • 93

    Mostly Sunny

    • 69
    • 93

    Slight Chance Thunderstorms

Today 10 Sep Knox

Mostly sunny. Highs in the lower 90s. West Winds 10 Mph or less.

Tonight 10 Sep Knox

Partly cloudy. Lows in the upper 60s. Light Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Downtown Knoxville Temperature Statistics

September Temperature

Knoxville, McGhee Tyson Airport (10.6 miles)

  • Lowest 8 September, 2026

    68 °F

  • Average September

    83.2 °F

  • Highest 4 September, 2026

    98.7 °F

Climate (2021–2026)

Knoxville, McGhee Tyson Airport (10.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    51.4 °F

  • Average 2021–2026

    61.2 °F

  • Average High 2021–2026

    71.7 °F
Get WillyWeather+ to remove ads