Ritter Island State Park Weather Forecast

    • 23
    • 39

    Decreasing Clouds

    • 28
    • 47

    Partly Sunny

    • 31
    • 54

    Partly Sunny

    • 38
    • 58

    Rain Likely

    • 34
    • 51

    Rain Likely

    • 32
    • 51

    Chance Rain/Snow

Today 20 Feb Western Magic Valley

Mostly sunny. Highs 34 to 39. West Winds 10 to 15 Mph with Gusts to 25 Mph.

Tonight 20 Feb Western Magic Valley

Increasing Clouds. Lows 19 to 24. West Winds 10 to 15 Mph in the Evening, shifting to southeast after midnight.

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Ritter Island State Park Temperature Statistics

February Temperature

Jerome County Airport (19.3 miles)

  • Lowest 10 February, 2026

    27 °F

  • Average February

    42 °F

  • Highest 5 February, 2026

    60.7 °F

Climate (2021–Present)

Jerome County Airport (19.3 miles)

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  • Average Low 2021–2026

    40.2 °F

  • Average 2021–2026

    51.1 °F

  • Average High 2021–2026

    62.3 °F
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