Prospect Heights Weather Forecast

    • 51
    • 70

    Partly Sunny

    • 51
    • 74

    Partly Sunny

    • 48
    • 63

    Mostly Cloudy

    • 55
    • 68

    Mostly Cloudy

    • 57
    • 74

    Partly Sunny

    • 56
    • 74

    Partly Sunny

    • 57
    • 74

    Mostly Cloudy

Today 24 Oct Northern Cook

Partly cloudy. Highs in the lower 70s Inland, but only in the upper 60s near the lake. South Winds 5 to 10 Mph.

Tonight 24 Oct Northern Cook

Partly cloudy. Lows in the lower 50s. South Winds 5 to 10 Mph.

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Prospect Heights Temperature Statistics

October Temperature

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

  • Lowest 17 October, 2026

    37.7 °F

  • Average October

    60.3 °F

  • Highest 12 October, 2026

    88.6 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    43.9 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    61.5 °F
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