Mallard Lake County Forest Preserve Weather Forecast

    • 61
    • 79

    Chance Rain Showers

    • 63
    • 73

    Rain Showers Likely

    • 62
    • 77

    Chance Rain Showers

    • 63
    • 76

    Chance Rain Showers

    • 62
    • 81

    Rain Showers Likely

    • 56
    • 73

    Chance Rain Showers

Today 15 Sep DuPage

Mostly cloudy. Numerous Showers late in the morning. Isolated Thunderstorms. Scattered Showers in the afternoon. Highs in the upper 70s. Southwest Winds 5 to 10 Mph. Chance of precipitation 70 percent.

Tonight 15 Sep DuPage

Mostly cloudy. A chance of Thunderstorms early in the evening. A chance of Showers. A slight chance of Thunderstorms in the late evening and overnight. Lows in the lower 60s. North Winds around 5 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mallard Lake County Forest Preserve Temperature Statistics

September Temperature

Chicago / West Chicago, Dupage Airport (6.8 miles)

  • Lowest 11 September, 2026

    53.1 °F

  • Average September

    74.8 °F

  • Highest 1 September, 2026

    93 °F

Climate (2021–2026)

Chicago / West Chicago, Dupage Airport (6.8 miles)

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  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    61.7 °F
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