Prospect Heights Weather Forecast

    • 49
    • 67

    Mostly Sunny

    • 47
    • 70

    Mostly Sunny

    • 46
    • 63

    Sunny

    • 54
    • 68

    Mostly Sunny

    • 50
    • 72

    Mostly Sunny

    • 51
    • 70

    Partly Sunny

    • 53
    • 69

    Mostly Sunny

Today 3 Oct Northern Cook

Mostly sunny. Near steady temperature in the mid 60s. Southeast Winds 5 to 10 Mph.

Tonight 3 Oct Northern Cook

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 40s. South Winds around 5 Mph.

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Prospect Heights Temperature Statistics

October Temperature

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

  • Lowest 1 October, 2026

    61 °F

  • Average October

    64.8 °F

  • Highest 1 October, 2026

    70 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    44 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    61.5 °F
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