Waterfall Glen County Forest Preserve Weather Forecast

    • 55
    • 82

    Slight Chance Thunderstorms

    • 52
    • 73

    Mostly Sunny

    • 51
    • 70

    Mostly Sunny

    • 51
    • 72

    Mostly Sunny

    • 55
    • 75

    Mostly Sunny

    • 57
    • 78

    Partly Sunny

Today 23 Aug DuPage

Mostly cloudy through mid Morning, then becoming partly cloudy. A slight chance of Showers through mid morning. Highs in the lower 80s. West Winds 5 to 10 Mph, increasing to 10 to 15 Mph with Gusts up to 25 Mph in the afternoon. Chance of precipitation 20 percent.

Tonight 23 Aug DuPage

Mostly clear. Lows in the mid 50s. Northwest Winds 5 to 10 Mph.

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Waterfall Glen County Forest Preserve Temperature Statistics

August Temperature

Lewis University Airport (8.7 miles)

  • Lowest 2 August, 2025

    58.6 °F

  • Average August

    75.6 °F

  • Highest 16 August, 2025

    92.6 °F

Climate (2020–Present)

Lewis University Airport (8.7 miles)

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  • Average Low 2020–2025

    43.5 °F

  • Average 2020–2025

    52.5 °F

  • Average High 2020–2025

    61.7 °F
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