Crystal Lake Weather Forecast

    • 47
    • 66

    Mostly Sunny

    • 37
    • 60

    Breezy

    • 34
    • 57

    Sunny

    • 37
    • 65

    Mostly Sunny

    • 39
    • 65

    Partly Sunny

    • 41
    • 65

    Mostly Sunny

Today 19 Oct Brown

Widespread frost in the morning. Sunny. Highs in the mid 60s. Southwest Winds around 10 Mph, becoming south 15 to 20 Mph in the afternoon.

Tonight 19 Oct Brown

Mostly clear. Lows in the mid 40s. Southwest Winds 10 to 20 Mph.

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Crystal Lake Temperature Statistics

October Temperature

Ainsworth Regional Airport (19.3 miles)

  • Lowest 13 October, 2025

    36.9 °F

  • Average October

    59.5 °F

  • Highest 4 October, 2025

    91 °F

Climate (2020–Present)

Ainsworth Regional Airport (19.3 miles)

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  • Average Low 2020–2025

    37.6 °F

  • Average 2020–2025

    49.3 °F

  • Average High 2020–2025

    61.7 °F
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