Crystal Lake Weather Forecast

    • 72
    • 104

    Slight Chance Thunderstorms

    • 69
    • 100

    Slight Chance Thunderstorms

    • 66
    • 91

    Chance Thunderstorms

    • 67
    • 93

    Chance Thunderstorms

    • 65
    • 93

    Chance Thunderstorms

    • 63
    • 92

    Slight Chance Thunderstorms

Today 26 Jul Brown

Sunny. A slight chance of Showers and Thunderstorms in the afternoon. Highs around 103. Southwest Winds 10 to 20 Mph. Chance of precipitation 20 percent. Heat index Readings 107 to 112.

Tonight 26 Jul Brown

Mostly clear. A slight chance of Showers and Thunderstorms in the evening. Lows in the lower 70s. West Winds up to 10 Mph in the Evening, becoming light and variable. Chance of precipitation 20 percent. Highest heat index Readings 104 to 109 in the evening.

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Crystal Lake Temperature Statistics

July Temperature

Ainsworth Regional Airport (19.3 miles)

  • Lowest 5 July, 2026

    59 °F

  • Average July

    76.7 °F

  • Highest 19 July, 2026

    100 °F

Climate (2021–2026)

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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