Westmont Weather Forecast

    • 65
    • 86

    Mostly Sunny

    • 65
    • 86

    Mostly Cloudy

    • 65
    • 81

    Chance Rain Showers

    • 65
    • 83

    Chance Thunderstorms

    • 63
    • 81

    Chance Rain Showers

    • 60
    • 78

    Chance Rain Showers

Today 18 Sep DuPage

Mostly sunny. Patchy fog through mid morning. Highs in the mid 80s. Southeast Winds 5 to 10 Mph.

Tonight 18 Sep DuPage

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 60s. East Winds around 5 Mph.

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Westmont Temperature Statistics

September Temperature

Chicago, Chicago Midway Airport (11.2 miles)

  • Lowest 7 September, 2025

    48.9 °F

  • Average September

    68.1 °F

  • Highest 12 September, 2025

    84.9 °F

Climate (2020–Present)

Chicago, Chicago Midway Airport (11.2 miles)

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  • Average Low 2020–2025

    46.6 °F

  • Average 2020–2025

    54.2 °F

  • Average High 2020–2025

    61.8 °F
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