Knoxville Weather Forecast

    • 70
    • 89

    Thunderstorms Likely

    • 69
    • 85

    Rain Showers

    • 71
    • 86

    Rain Showers Likely

    • 70
    • 89

    Chance Thunderstorms

    • 64
    • 82

    Mostly Cloudy

    • 63
    • 78

    Partly Sunny

Today 12 Aug Marion

Mostly cloudy late this Morning, then becoming mostly sunny. A slight chance of Showers and Thunderstorms late this morning. Highs in the upper 80s. East Winds 5 to 10 Mph, becoming northeast this afternoon. Chance of rain 20 percent.

Tonight 12 Aug Marion

Partly cloudy in the Evening, then mostly cloudy with a chance of Showers and Thunderstorms after midnight. Humid with Lows around 70. East Winds 5 to 10 Mph. Chance of rain 50 percent. Heat index Values up to 100 early in the evening.

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Knoxville Temperature Statistics

August Temperature

Knoxville (1.2 miles)

  • Lowest 8 August, 2026

    62.6 °F

  • Average August

    74.3 °F

  • Highest 9 August, 2026

    89.6 °F

Climate (2021–2026)

Knoxville (1.2 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    62.8 °F
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