Downtown Knoxville Weather Forecast

    • 62
    • 82

    Slight Chance Thunderstorms

    • 60
    • 84

    Partly Sunny

    • 61
    • 86

    Mostly Sunny

    • 63
    • 88

    Partly Sunny

    • 64
    • 88

    Slight Chance Thunderstorms

    • 63
    • 85

    Chance Rain Showers

Today 16 Sep Knox

Partly sunny with a chance of Showers with a slight chance of Thunderstorms. Highs in the lower 80s. Light Winds. Chance of rain 30 percent.

Tonight 16 Sep Knox

Mostly cloudy. Lows in the lower 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 10 September, 2025

    54 °F

  • Average September

    69 °F

  • Highest 5 September, 2025

    86 °F

Climate (2020–Present)

Knoxville, McGhee Tyson Airport (10.6 miles)

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

  • Average Low 2020–2025

    50.9 °F

  • Average 2020–2025

    60.6 °F

  • Average High 2020–2025

    71.1 °F
Get WillyWeather+ to remove ads