Three Island State Park Weather Forecast

    • 43
    • 75

    Sunny

    • 51
    • 83

    Mostly Sunny

    • 45
    • 83

    Rain Showers Likely

    • 43
    • 67

    Chance Rain Showers

    • 45
    • 71

    Chance Rain Showers

    • 48
    • 73

    Mostly Sunny

Today 1 May Upper Treasure Valley

Sunny. Highs 71 to 76. Light Winds.

Tonight 1 May Upper Treasure Valley

Mostly clear. Lows 42 to 49. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Three Island State Park Temperature Statistics

May Temperature

Mountain Home Air Force Base (28.6 miles)

  • Lowest

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  • Average May

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Climate (2020–Present)

Mountain Home Air Force Base (28.6 miles)

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  • Average Low 2020–2025

    39.6 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    64.8 °F
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