Arlington Heights Weather Forecast

    • 44
    • 73

    Decreasing Clouds

    • 41
    • 63

    Partly Sunny

    • 42
    • 58

    Mostly Sunny

    • 50
    • 68

    Rain Showers Likely

    • 44
    • 63

    Partly Sunny

    • 50
    • 67

    Chance Rain Showers

Today 9 May Northern Cook

Partly cloudy late in the Morning, then becoming mostly cloudy. Breezy. Highs in the lower 70s. West Winds 10 to 15 Mph with Gusts up to 25 Mph, increasing to 15 to 20 Mph with Gusts up to 35 Mph in the afternoon.

Tonight 9 May Northern Cook

Mostly clear. Lows in the mid 40s. North Winds 10 to 15 Mph, Diminishing to around 5 Mph after midnight.

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Arlington Heights Temperature Statistics

May Temperature

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

  • Lowest 2 May, 2026

    30.7 °F

  • Average May

    50.9 °F

  • Highest 4 May, 2026

    81.6 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    61.6 °F
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