Mundelein Weather Forecast

    • 58
    • 77

    Partly Sunny

    • 63
    • 79

    Thunderstorms Likely

    • 58
    • 78

    Mostly Sunny

    • 57
    • 75

    Mostly Sunny

    • 59
    • 76

    Partly Sunny

    • 64
    • 79

    Chance Rain Showers

    • 63
    • 80

    Slight Chance Thunderstorms

Today 20 Aug Lake

Mostly sunny. Temperatures in the mid 70s. Northeast Winds around 5 Mph.

Tonight 20 Aug Lake

Partly cloudy. Lows in the upper 50s. North Winds around 5 Mph, becoming west after midnight.

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Mundelein Temperature Statistics

August Temperature

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

  • Lowest 3 August, 2026

    61.6 °F

  • Average August

    74.3 °F

  • Highest 7 August, 2026

    87.7 °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

    52.9 °F

  • Average High 2021–2026

    61.6 °F
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