Rock Island Lake Weather Forecast

    • 30
    • 43

    Sunny

    • 27
    • 41

    Partly Sunny

    • 26
    • 36

    Partly Sunny

    • 26
    • 37

    Snow

    • 16
    • 28

    Chance Snow

    • 13
    • 24

    Chance Snow

Today 5 Feb Boise Mountains

Sunny. Highs 48 to 60.

Tonight 5 Feb Boise Mountains

Mostly clear. Lows 26 to 37.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rock Island Lake Temperature Statistics

February Temperature

Stanley, Stanley Ranger Station (19.9 miles)

  • Lowest 2 February, 2026

    6.1 °F

  • Average February

    23.2 °F

  • Highest 1 February, 2026

    42.1 °F

Climate (2021–Present)

Stanley, Stanley Ranger Station (19.9 miles)

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  • Average Low 2021–2026

    23.1 °F

  • Average 2021–2026

    38.4 °F

  • Average High 2021–2026

    53.9 °F
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