Arlington Heights Weather Forecast

    • 52
    • 73

    Rain Showers

    • 66
    • 74

    Partly Sunny

    • 61
    • 82

    Rain Showers Likely

    • 64
    • 72

    Rain Showers Likely

    • 61
    • 75

    Chance Rain Showers

    • 59
    • 74

    Chance Rain Showers

Today 13 Sep Northern Cook

Mostly cloudy. A chance of Showers early in the afternoon. Highs in the mid 70s. North Winds 5 to 10 Mph. Chance of precipitation 40 percent.

Tonight 13 Sep Northern Cook

Mostly clear after Midnight, then becoming partly cloudy. Lows in the lower 60s. Northwest Winds 5 to 10 Mph.

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Arlington Heights Temperature Statistics

September Temperature

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

  • Lowest 7 September, 2026

    59.6 °F

  • Average September

    76.9 °F

  • Highest 2 September, 2026

    96.7 °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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