Mundelein Weather Forecast

    • 62
    • 78

    Mostly Sunny

    • 59
    • 82

    Partly Sunny

    • 58
    • 75

    Mostly Cloudy

    • 66
    • 77

    Chance Rain Showers

    • 60
    • 79

    Chance Rain Showers

    • 60
    • 71

    Chance Rain Showers

Today 11 Sep Lake

Sunny. Highs in the upper 70s. Southeast Winds 5 to 10 Mph.

Tonight 11 Sep Lake

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 60s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mundelein Temperature Statistics

September Temperature

Chicago / Wheeling, Pal-Waukee Airport (10.6 miles)

  • Lowest 7 September, 2026

    59.6 °F

  • Average September

    78.2 °F

  • Highest 2 September, 2026

    96.7 °F

Climate (2021–2026)

Chicago / Wheeling, Pal-Waukee Airport (10.6 miles)

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  • Average Low 2021–2026

    44 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    61.6 °F
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