Crystal Lake Weather Forecast

    • 48
    • 76

    Slight Chance Thunderstorms

    • 54
    • 88

    Partly Sunny

    • 55
    • 90

    Chance Thunderstorms

    • 55
    • 86

    Partly Sunny

    • 53
    • 78

    Chance Thunderstorms

    • 53
    • 75

    Chance Rain Showers

    • 52
    • 75

    Chance Rain Showers

Today 23 May Brown

Mostly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Highs in the mid 70s. Southwest Winds up to 10 Mph, increasing to 10 to 15 Mph in the afternoon. Chance of precipitation 20 percent.

Tonight 23 May Brown

Mostly clear. Lows in the upper 40s. South Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

May Temperature

Ainsworth Regional Airport (19.3 miles)

  • Lowest 1 May, 2026

    30.9 °F

  • Average May

    56.1 °F

  • Highest 11 May, 2026

    88 °F

Climate (2021–Present)

Ainsworth Regional Airport (19.3 miles)

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  • Average Low 2021–2026

    38 °F

  • Average 2021–2026

    49.9 °F

  • Average High 2021–2026

    62.5 °F
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