Crystal Lake Weather Forecast

    • 60
    • 85

    Mostly Sunny

    • 59
    • 84

    Mostly Sunny

    • 64
    • 89

    Mostly Sunny

    • 66
    • 93

    Chance Thunderstorms

    • 62
    • 86

    Chance Thunderstorms

    • 57
    • 85

    Chance Rain Showers

Today 13 Aug Montcalm

Sunny. Highs in the mid 80s. Northwest Winds 5 to 10 Mph.

Tonight 13 Aug Montcalm

Mostly clear. Lows in the upper 50s. North Winds 5 to 10 Mph in the evening becoming light.

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  • Temperature Real-Time

Crystal Lake Temperature Statistics

August Temperature

Alma, Gratiot Community Airport (12.4 miles)

  • Lowest 2 August, 2025

    48.2 °F

  • Average August

    72 °F

  • Highest 9 August, 2025

    91.4 °F

Climate (2020–Present)

Alma, Gratiot Community Airport (12.4 miles)

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  • Average Low 2020–2025

    39.6 °F

  • Average 2020–2025

    49.3 °F

  • Average High 2020–2025

    58.7 °F
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