Lake Arlington Weather Forecast

    • 72
    • 86

    Rain Showers Likely

    • 64
    • 82

    Rain Showers

    • 58
    • 79

    Mostly Sunny

    • 64
    • 81

    Partly Sunny

    • 63
    • 83

    Chance Rain Showers

    • 64
    • 80

    Chance Rain Showers

Today 8 Sep Northern Cook

Mostly cloudy. Highs in the mid 80s Inland, but only in the lower 80s near the lake. South Winds 5 to 10 Mph.

Tonight 8 Sep Northern Cook

Mostly cloudy. A slight chance of Showers and Thunderstorms after midnight. A chance of Showers late. Lows in the lower 70s. Southwest Winds 5 to 10 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Arlington Temperature Statistics

September Temperature

Chicago / Wheeling, Pal-Waukee Airport (2.5 miles)

  • Lowest 6 September, 2026

    64 °F

  • Average September

    80.4 °F

  • Highest 2 September, 2026

    96.7 °F

Climate (2021–2026)

Chicago / Wheeling, Pal-Waukee Airport (2.5 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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