Spencer Reservoir Weather Forecast

    • 49
    • 83

    Increasing Clouds

    • 45
    • 81

    Mostly Cloudy

    • 44
    • 71

    Mostly Cloudy

    • 38
    • 72

    Partly Sunny

    • 40
    • 75

    Partly Sunny

    • 44
    • 77

    Partly Sunny

Today 31 Aug Owyhee Mountains

Sunny, warmer with Highs 78 to 87.

Tonight 31 Aug Owyhee Mountains

Increasing Clouds. Lows 54 to 61.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Spencer Reservoir Temperature Statistics

August Temperature

Mountain Home Air Force Base (42.3 miles)

  • Lowest 4 August, 2026

    49.6 °F

  • Average August

    78.8 °F

  • Highest 1 August, 2026

    104.6 °F

Climate (2021–2026)

Mountain Home Air Force Base (42.3 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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