Mount Prospect Weather Forecast

    • 52
    • 68

    Decreasing Clouds

    • 61
    • 73

    Chance Rain Showers

    • 50
    • 69

    Chance Rain Showers

    • 53
    • 68

    Chance Rain Showers

    • 54
    • 70

    Chance Rain Showers

    • 55
    • 70

    Chance Rain Showers

Today 27 Oct Northern Cook

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

Tonight 27 Oct Northern Cook

Mostly cloudy. Lows in the lower 50s. South Winds around 5 Mph.

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Mount Prospect Temperature Statistics

October Temperature

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

  • Lowest 17 October, 2026

    37.7 °F

  • Average October

    60.2 °F

  • Highest 12 October, 2026

    88.6 °F

Climate (2021–2026)

Chicago / Wheeling, Pal-Waukee Airport (3.7 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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