Arlington Heights Weather Forecast

    • 67
    • 84

    Chance Rain Showers

    • 64
    • 81

    Partly Sunny

    • 66
    • 82

    Rain Showers Likely

    • 60
    • 76

    Partly Sunny

    • 60
    • 76

    Partly Sunny

    • 62
    • 77

    Slight Chance Rain Showers

Today 16 Aug Northern Cook

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms early in the morning. Humid with Highs in the mid 80s. West Winds 5 to 10 Mph, increasing to northwest 10 to 15 Mph in the afternoon. Chance of precipitation 30 percent.

Tonight 16 Aug Northern Cook

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the upper 60s. North Winds 5 to 10 Mph.

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Arlington Heights Temperature Statistics

August Temperature

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

  • Lowest 3 August, 2026

    61.6 °F

  • Average August

    73.9 °F

  • Highest 7 August, 2026

    87.7 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    44 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    61.6 °F
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