Rock Island Lake Weather Forecast

    • 16
    • 29

    Snow Showers

    • 23
    • 29

    Snow Showers

    • 15
    • 28

    Snow Showers

    • 14
    • 22

    Snow Showers

    • 17
    • 25

    Snow Showers Likely

    • 16
    • 25

    Snow Showers

Today 29 Mar Boise Mountains

Numerous rain and snow Showers. Isolated Thunderstorms this afternoon. Chance of precipitation 70 percent. Snow accumulation up to 1 inch. Highs 35 to 49.

Tonight 29 Mar Boise Mountains

Mostly cloudy with a chance of snow Showers with a slight chance of Thunderstorms in the Evening, then partly cloudy after midnight. Chance of snow 30 percent. Lows 16 to 31.

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Rock Island Lake Temperature Statistics

March Temperature

Stanley, Stanley Ranger Station (19.9 miles)

  • Lowest 19 March, 2025

    -10.2 °F

  • Average March

    28.8 °F

  • Highest 26 March, 2025

    60.1 °F

Climate (2020–Present)

Stanley, Stanley Ranger Station (19.9 miles)

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  • Average Low 2020–2025

    22.6 °F

  • Average 2020–2025

    37.9 °F

  • Average High 2020–2025

    53.2 °F
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