Wheaton Weather Forecast

    • 65
    • 86

    Mostly Sunny

    • 65
    • 88

    Rain Showers

    • 63
    • 81

    Chance Thunderstorms

    • 63
    • 78

    Rain Showers Likely

    • 62
    • 77

    Chance Thunderstorms

    • 62
    • 76

    Chance Rain Showers

    • 59
    • 74

    Mostly Cloudy

Today 18 Sep DuPage

Mostly sunny. Highs in the mid 80s. South Winds around 5 Mph, becoming east in the afternoon.

Tonight 18 Sep DuPage

Mostly clear. Patchy fog after midnight. Lows in the mid 60s. East Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Wheaton Temperature Statistics

September Temperature

Chicago / West Chicago, Dupage Airport (7.5 miles)

  • Lowest 7 September, 2025

    44.1 °F

  • Average September

    64.9 °F

  • Highest 14 September, 2025

    84.9 °F

Climate (2020–Present)

Chicago / West Chicago, Dupage Airport (7.5 miles)

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  • Average Low 2020–2025

    42 °F

  • Average 2020–2025

    51.7 °F

  • Average High 2020–2025

    61.3 °F
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