Harriman Weather Forecast

    • 61
    • 84

    Chance Thunderstorms

    • 59
    • 85

    Partly Sunny

    • 60
    • 88

    Mostly Sunny

    • 61
    • 89

    Partly Sunny

    • 63
    • 89

    Mostly Cloudy

    • 62
    • 87

    Chance Rain Showers

    • 63
    • 86

    Chance Rain Showers

Today 16 Sep Roane

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

Tonight 16 Sep Roane

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 60s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harriman Temperature Statistics

September Temperature

Oak Ridge (18.6 miles)

  • Lowest 8 September, 2025

    53.1 °F

  • Average September

    66.7 °F

  • Highest 5 September, 2025

    86 °F

Climate (2020–Present)

Oak Ridge (18.6 miles)

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  • Average Low 2020–2025

    50.7 °F

  • Average 2020–2025

    60.4 °F

  • Average High 2020–2025

    70.9 °F
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