Mount Prospect Weather Forecast

    • 25
    • 33

    Increasing Clouds

    • 36
    • 41

    Mostly Cloudy

    • 31
    • 47

    Mostly Cloudy

    • 40
    • 42

    Rain Likely

    • 41
    • 48

    Chance Rain

    • 35
    • 48

    Mostly Cloudy

    • 25
    • 44

    Mostly Cloudy

Today 21 Dec Northern Cook

Sunny. Highs around 30. Northwest Winds 5 to 10 Mph, becoming southwest in the afternoon.

Tonight 21 Dec Northern Cook

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 20s. South Winds 5 to 10 Mph.

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  • Temperature Real-Time

Mount Prospect Temperature Statistics

December Temperature

Chicago / Wheeling, Pal-Waukee Airport (3.7 miles)

  • Lowest 14 December, 2025

    -2 °F

  • Average December

    23.1 °F

  • Highest 18 December, 2025

    51.1 °F

Climate (2020–Present)

Chicago / Wheeling, Pal-Waukee Airport (3.7 miles)

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  • Average Low 2020–2025

    44.1 °F

  • Average 2020–2025

    52.9 °F

  • Average High 2020–2025

    61.4 °F
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