Three Island State Park Weather Forecast

    • 46
    • 81

    Mostly Sunny

    • 55
    • 87

    Mostly Sunny

    • 53
    • 82

    Partly Sunny

    • 52
    • 82

    Mostly Sunny

    • 57
    • 89

    Mostly Sunny

    • 59
    • 93

    Mostly Sunny

Today 24 May Upper Treasure Valley

Sunny. Highs 77 to 82. Northwest Winds 10 to 15 Mph.

Tonight 24 May Upper Treasure Valley

Mostly clear. Lows 44 to 53. Northwest Winds 10 to 15 Mph in the Evening, shifting to southeast after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Three Island State Park Temperature Statistics

May Temperature

Mountain Home Air Force Base (28.6 miles)

  • Lowest 19 May, 2025

    33.7 °F

  • Average May

    58.8 °F

  • Highest 10 May, 2025

    92.6 °F

Climate (2020–Present)

Mountain Home Air Force Base (28.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    39.6 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    64.8 °F
Get WillyWeather+ to remove ads