Crystal Lake Weather Forecast

    • 56
    • 78

    Decreasing Clouds

    • 56
    • 78

    Mostly Cloudy

    • 56
    • 80

    Partly Sunny

    • 57
    • 77

    Mostly Cloudy

    • 56
    • 73

    Chance Thunderstorms

    • 55
    • 73

    Chance Rain Showers

Today 26 Aug Brown

Partly sunny. Highs in the upper 70s. South Winds up to 10 Mph, increasing to 10 to 15 Mph in the afternoon.

Tonight 26 Aug Brown

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 50s. South Winds 10 to 15 Mph.

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  • Temperature Real-Time

Crystal Lake Temperature Statistics

August Temperature

Ainsworth Regional Airport (19.3 miles)

  • Lowest 23 August, 2025

    55.4 °F

  • Average August

    74.4 °F

  • Highest 21 August, 2025

    93.2 °F

Climate (2020–Present)

Ainsworth Regional Airport (19.3 miles)

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  • Average Low 2020–2025

    37.5 °F

  • Average 2020–2025

    49.3 °F

  • Average High 2020–2025

    61.7 °F
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