Arlington Heights Weather Forecast

    • 51
    • 74

    Mostly Cloudy

    • 49
    • 62

    Mostly Cloudy

    • 55
    • 66

    Mostly Cloudy

    • 58
    • 70

    Partly Sunny

    • 55
    • 74

    Chance Rain Showers

    • 57
    • 73

    Chance Rain Showers

    • 57
    • 71

    Chance Rain Showers

Today 25 Oct Northern Cook

Mostly cloudy with a 40 percent chance of Showers. Highs in the upper 60s.

Tonight 25 Oct Northern Cook

Mostly cloudy. Patchy fog late. Lows in the lower 50s. South Winds around 5 Mph, becoming northwest after midnight.

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Arlington Heights Temperature Statistics

October Temperature

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

  • Lowest 17 October, 2026

    37.7 °F

  • Average October

    60.1 °F

  • Highest 12 October, 2026

    88.6 °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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