Arlington Heights Weather Forecast

    • 46
    • 72

    Sunny

    • 48
    • 65

    Mostly Sunny

    • 55
    • 70

    Mostly Sunny

    • 51
    • 73

    Partly Sunny

    • 51
    • 69

    Partly Sunny

    • 50
    • 69

    Partly Sunny

    • 56
    • 71

    Partly Sunny

Today 4 Oct Northern Cook

Partly cloudy. Highs in the mid 70s.

Tonight 4 Oct Northern Cook

Clear. Lows in the upper 40s. Northwest Winds 5 to 10 Mph.

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Arlington Heights Temperature Statistics

October Temperature

Chicago / Wheeling, Pal-Waukee Airport (4.3 miles)

  • Lowest 2 October, 2026

    50 °F

  • Average October

    61.3 °F

  • Highest 1 October, 2026

    70 °F

Climate (2021–2026)

Chicago / Wheeling, Pal-Waukee Airport (4.3 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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