Prospect Heights Weather Forecast

    • 38
    • 69

    Mostly Cloudy

    • 47
    • 70

    Partly Sunny

    • 31
    • 51

    Mostly Cloudy

    • 32
    • 45

    Mostly Cloudy

    • 36
    • 54

    Mostly Cloudy

    • 42
    • 49

    Partly Sunny

    • 31
    • 64

    Slight Chance Rain Showers

Today 20 Mar Northern Cook

Partly cloudy. North Winds around 10 Mph.

Tonight 20 Mar Northern Cook

Mostly cloudy. Lows in the upper 30s. Northeast Winds 5 to 10 Mph.

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Prospect Heights Temperature Statistics

March Temperature

Chicago / Wheeling, Pal-Waukee Airport (2.5 miles)

  • Lowest 16 March, 2026

    17.7 °F

  • Average March

    40.6 °F

  • Highest 9 March, 2026

    73.7 °F

Climate (2021–Present)

Chicago / Wheeling, Pal-Waukee Airport (2.5 miles)

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  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    61.6 °F
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