Arlington Heights Weather Forecast

    • 62
    • 79

    Increasing Clouds

    • 70
    • 85

    Mostly Sunny

    • 60
    • 82

    Rain Showers Likely

    • 54
    • 69

    Chance Rain Showers

    • 50
    • 66

    Rain Showers Likely

    • 38
    • 59

    Partly Sunny

    • 38
    • 54

    Mostly Sunny

Today 11 Oct Northern Cook

Mostly sunny. Highs around 60.

Tonight 11 Oct Northern Cook

Clear in the Evening, then becoming partly cloudy. Lows in the lower 60s. South Winds 5 to 10 Mph.

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Arlington Heights Temperature Statistics

October Temperature

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

  • Lowest 3 October, 2026

    45.6 °F

  • Average October

    61.2 °F

  • Highest 7 October, 2026

    78.7 °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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