Ritter Island State Park Weather Forecast

    • 38
    • 68

    Becoming Sunny

    • 45
    • 77

    Mostly Sunny

    • 50
    • 84

    Mostly Sunny

    • 56
    • 90

    Partly Sunny

    • 56
    • 88

    Partly Sunny

    • 58
    • 89

    Mostly Sunny

    • 56
    • 90

    Mostly Sunny

Today 22 Jun Western Magic Valley

Partly cloudy. A chance of rain Showers, mainly this afternoon. Chance of rain 30 percent. Highs 63 to 68. Windy. West Winds 15 to 25 Mph with Gusts to 35 Mph.

Tonight 22 Jun Western Magic Valley

Clear. Lows 37 to 42. West Winds around 10 Mph this Evening, becoming light.

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Ritter Island State Park Temperature Statistics

June Temperature

Jerome County Airport (19.3 miles)

  • Lowest 5 June, 2025

    43.6 °F

  • Average June

    68.7 °F

  • Highest 9 June, 2025

    91.7 °F

Climate (2020–Present)

Jerome County Airport (19.3 miles)

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  • Average Low 2020–2025

    39.9 °F

  • Average 2020–2025

    50.8 °F

  • Average High 2020–2025

    62 °F
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