Blackwell County Forest Preserve Weather Forecast

    • 63
    • 80

    Decreasing Clouds

    • 62
    • 81

    Mostly Sunny

    • 65
    • 84

    Partly Sunny

    • 57
    • 80

    Mostly Sunny

    • 52
    • 73

    Mostly Sunny

    • 52
    • 72

    Mostly Sunny

Today 20 Aug DuPage

Mostly cloudy in the Morning, then clearing. Patchy fog through mid morning. A chance of Sprinkles in the morning. Highs in the upper 70s. Northeast Winds 5 to 10 Mph.

Tonight 20 Aug DuPage

Mostly clear. Lows in the mid 60s. Northeast Winds 5 to 10 Mph.

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Blackwell County Forest Preserve Temperature Statistics

August Temperature

Chicago / West Chicago, Dupage Airport (4.3 miles)

  • Lowest 2 August, 2025

    54.6 °F

  • Average August

    76.3 °F

  • Highest 16 August, 2025

    95.6 °F

Climate (2020–Present)

Chicago / West Chicago, Dupage Airport (4.3 miles)

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  • Average Low 2020–2025

    42.1 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    61.3 °F
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