Watts Bar Lake Weather Forecast

    • 62
    • 85

    Mostly Sunny

    • 63
    • 85

    Increasing Clouds

    • 61
    • 84

    Partly Sunny

    • 62
    • 86

    Mostly Sunny

    • 64
    • 88

    Mostly Sunny

    • 64
    • 89

    Slight Chance Thunderstorms

    • 63
    • 85

    Chance Thunderstorms

Today 14 Sep Roane

Sunny. Highs in the mid 80s. Light Winds.

Tonight 14 Sep Roane

Mostly clear. Lows in the lower 60s. Light Winds.

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Watts Bar Lake Temperature Statistics

September Temperature

Athens McMinn County Airport (25.5 miles)

  • Lowest 10 September, 2025

    53.6 °F

  • Average September

    69 °F

  • Highest 5 September, 2025

    87.8 °F

Climate (2020–Present)

Athens McMinn County Airport (25.5 miles)

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  • Average Low 2020–2025

    49.2 °F

  • Average 2020–2025

    59.8 °F

  • Average High 2020–2025

    71.5 °F
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