Crystal Lake Weather Forecast

    • 41
    • 72

    Mostly Sunny

    • 39
    • 66

    Mostly Sunny

    • 48
    • 68

    Mostly Sunny

    • 48
    • 73

    Mostly Sunny

    • 55
    • 74

    Partly Sunny

    • 54
    • 75

    Breezy

Today 18 Oct Brown

Sunny. Highs in the lower 70s. Southwest Winds 10 to 15 Mph, becoming south in the afternoon.

Tonight 18 Oct Brown

Partly cloudy. Lows around 40. Light and variable Winds.

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Crystal Lake Temperature Statistics

October Temperature

Ainsworth Regional Airport (19.3 miles)

  • Lowest 14 October, 2026

    34.9 °F

  • Average October

    58.9 °F

  • Highest 9 October, 2026

    89.8 °F

Climate (2021–2026)

Ainsworth Regional Airport (19.3 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    62.5 °F
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