Mountain Home Weather Forecast

    • 58
    • 78

    Slight Chance Rain Showers

    • 56
    • 81

    Partly Sunny

    • 58
    • 83

    Mostly Sunny

    • 59
    • 86

    Mostly Sunny

    • 60
    • 86

    Mostly Cloudy

    • 59
    • 82

    Slight Chance Thunderstorms

Today 16 Sep Washington

Partly sunny with a slight chance of Showers and Thunderstorms. Highs in the mid to upper 70s. Light Winds. Chance of rain 20 percent.

Tonight 16 Sep Washington

Mostly cloudy. Lows in the upper 50s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mountain Home Temperature Statistics

September Temperature

Bristol / Johnson / Kingsport, Tri-City Regional Airport (11.2 miles)

  • Lowest 8 September, 2025

    46 °F

  • Average September

    63.7 °F

  • Highest 5 September, 2025

    81 °F

Climate (2020–Present)

Bristol / Johnson / Kingsport, Tri-City Regional Airport (11.2 miles)

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  • Average Low 2020–2025

    46.7 °F

  • Average 2020–2025

    57.7 °F

  • Average High 2020–2025

    69.9 °F
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