Mountain Home Weather Forecast

    • 49
    • 72

    Chance Rain Showers

    • 51
    • 80

    Partly Sunny

    • 51
    • 82

    Partly Sunny

    • 46
    • 72

    Slight Chance Rain Showers

    • 51
    • 79

    Partly Sunny

    • 56
    • 83

    Partly Sunny

    • 57
    • 86

    Partly Sunny

Today 4 Sep Upper Treasure Valley

Areas of fog this morning. Partly cloudy with a chance of rain Showers. A slight chance of Thunderstorms this afternoon. Thunderstorms may produce heavy rainfall this afternoon. Chance of rain 30 percent. Highs 65 to 72. Northwest Winds 10 to 15 Mph.

Tonight 4 Sep Upper Treasure Valley

Increasing Clouds. Scattered Showers. Areas of fog. Chance of rain 40 percent. Lows 43 to 50. Northwest Winds 10 to 15 Mph with Gusts to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mountain Home Temperature Statistics

September Temperature

Mountain Home Air Force Base (10.6 miles)

  • Lowest 2 September, 2026

    59.2 °F

  • Average September

    72.9 °F

  • Highest 1 September, 2026

    91.7 °F

Climate (2021–2026)

Mountain Home Air Force Base (10.6 miles)

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  • Average Low 2021–2026

    40 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    65.6 °F
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