Johnson Reservoir Weather Forecast

    • 61
    • 87

    Increasing Clouds

    • 55
    • 80

    Chance Rain Showers

    • 57
    • 84

    Mostly Sunny

    • 59
    • 88

    Partly Sunny

    • 59
    • 89

    Mostly Sunny

    • 60
    • 88

    Partly Sunny

    • 60
    • 87

    Partly Sunny

Today 13 Jul Owyhee Mountains

Decreasing Clouds. Patchy smoke this morning. Highs 87 to 92.

Tonight 13 Jul Owyhee Mountains

Partly cloudy this Evening, then cloudy with a slight chance of Showers after midnight. Chance of rain 20 percent. Lows 60 to 69.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnson Reservoir Temperature Statistics

July Temperature

Mountain Home Air Force Base (46 miles)

  • Lowest 3 July, 2026

    55.4 °F

  • Average July

    79.3 °F

  • Highest 11 July, 2026

    103.8 °F

Climate (2021–2026)

Mountain Home Air Force Base (46 miles)

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  • Average Low 2021–2026

    39.9 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    65.4 °F
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