Bruneau Arm Weather Forecast

    • 28
    • 46

    Increasing Clouds

    • 37
    • 43

    Rain

    • 35
    • 53

    Mostly Cloudy

    • 36
    • 55

    Chance Rain

    • 34
    • 53

    Chance Rain

    • 30
    • 52

    Slight Chance Rain

    • 29
    • 50

    Partly Sunny

Today 31 Dec Upper Treasure Valley

Mostly sunny. Highs 42 to 48. East Winds 10 to 15 Mph.

Tonight 31 Dec Upper Treasure Valley

A slight chance of light freezing rain. Rain after midnight. Chance of precipitation 80 percent. Lows 26 to 31. Southeast Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Bruneau Arm Temperature Statistics

December Temperature

Mountain Home Air Force Base (9.3 miles)

  • Lowest 1 December, 2025

    13.3 °F

  • Average December

    40 °F

  • Highest 11 December, 2025

    63.5 °F

Climate (2021–Present)

Mountain Home Air Force Base (9.3 miles)

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  • Average Low 2021–2025

    40 °F

  • Average 2021–2025

    52.5 °F

  • Average High 2021–2025

    65.2 °F
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