Rocky Lake Weather Forecast

    • 56
    • 81

    Becoming Sunny

    • 61
    • 82

    Partly Sunny

    • 55
    • 78

    Chance Thunderstorms

    • 51
    • 71

    Partly Sunny

    • 46
    • 67

    Mostly Sunny

    • 46
    • 68

    Mostly Sunny

Today 21 Aug Montcalm

Sunny. Highs around 80. Northeast Winds 5 to 10 Mph. Gusts up to 20 Mph in the afternoon.

Tonight 21 Aug Montcalm

Mostly clear. Lows in the mid 50s. Light Winds.

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Rocky Lake Temperature Statistics

August Temperature

Big Rapids, Roben-Hood Airport (26.7 miles)

  • Lowest 2 August, 2025

    47.7 °F

  • Average August

    72.1 °F

  • Highest 16 August, 2025

    90.5 °F

Climate (2020–Present)

Big Rapids, Roben-Hood Airport (26.7 miles)

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  • Average Low 2020–2025

    38.5 °F

  • Average 2020–2025

    47.9 °F

  • Average High 2020–2025

    57 °F
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