Prospect Heights Weather Forecast

    • 41
    • 58

    Sunny

    • 42
    • 62

    Sunny

    • 45
    • 66

    Mostly Sunny

    • 48
    • 68

    Mostly Sunny

    • 51
    • 70

    Mostly Sunny

    • 52
    • 70

    Partly Sunny

    • 52
    • 70

    Partly Sunny

Today 17 Oct Northern Cook

Partly cloudy. Highs around 70.

Tonight 17 Oct Northern Cook

Clear. Lows around 40. Southwest Winds 5 to 10 Mph.

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Prospect Heights Temperature Statistics

October Temperature

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

  • Lowest 3 October, 2026

    45.6 °F

  • Average October

    63.6 °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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