Three Island State Park Weather Forecast

    • 30
    • 50

    Chance Rain Showers

    • 33
    • 49

    Chance Rain/Snow

    • 36
    • 54

    Rain Likely

    • 41
    • 61

    Rain

    • 33
    • 54

    Rain

    • 28
    • 50

    Chance Rain

    • 35
    • 54

    Mostly Cloudy

Today 13 Mar Upper Treasure Valley

Widespread rain Showers this Morning, then a chance of rain and snow Showers this afternoon. Chance of precipitation 80 percent. No snow accumulation. Cooler with Highs 47 to 52. West Winds 10 to 15 Mph with Gusts to 25 Mph.

Tonight 13 Mar Upper Treasure Valley

Mostly cloudy with a chance of rain and snow Showers this Evening, then partly cloudy after midnight. Chance of precipitation 30 percent. Colder with Lows 26 to 31. Northwest Winds 10 to 15 Mph with Gusts to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Three Island State Park Temperature Statistics

March Temperature

Mountain Home Air Force Base (28.6 miles)

  • Lowest 8 March, 2025

    23.9 °F

  • Average March

    43.9 °F

  • Highest 11 March, 2025

    63.1 °F

Climate (2020–Present)

Mountain Home Air Force Base (28.6 miles)

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  • Average Low 2020–2025

    39.5 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    64.7 °F
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