Arlington Heights Weather Forecast

    • 66
    • 83

    Mostly Sunny

    • 70
    • 83

    Rain Showers

    • 69
    • 84

    Rain Showers Likely

    • 67
    • 82

    Rain Showers Likely

    • 65
    • 81

    Chance Thunderstorms

    • 62
    • 77

    Slight Chance Thunderstorms

    • 60
    • 74

    Chance Thunderstorms

Today 8 Aug Northern Cook

Mostly sunny. Temperatures in the lower 80s. Northwest Winds around 5 Mph.

Tonight 8 Aug Northern Cook

Mostly clear. Lows in the mid 60s. Southwest Winds around 5 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

    72.4 °F

  • Highest 4 August, 2026

    85.6 °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

    52.9 °F

  • Average High 2021–2026

    61.6 °F
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