Johnson Reservoir Weather Forecast

    • 37
    • 69

    Becoming Sunny

    • 41
    • 67

    Partly Sunny

    • 40
    • 65

    Mostly Cloudy

    • 42
    • 63

    Chance Rain Showers

    • 38
    • 59

    Rain Showers Likely

    • 31
    • 49

    Slight Chance Rain Showers

Today 18 Oct Owyhee Mountains

Sunny. Highs 64 to 74.

Tonight 18 Oct Owyhee Mountains

Mostly clear. Lows 39 to 49.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnson Reservoir Temperature Statistics

October Temperature

Mountain Home Air Force Base (46 miles)

  • Lowest 14 October, 2026

    33.6 °F

  • Average October

    59.8 °F

  • Highest 4 October, 2026

    89.8 °F

Climate (2021–2026)

Mountain Home Air Force Base (46 miles)

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  • Average Low 2021–2026

    40.1 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    65.7 °F
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