Lake Arlington Weather Forecast

    • 64
    • 79

    Isolated Thunderstorms

    • 64
    • 81

    Mostly Sunny

    • 64
    • 84

    Mostly Sunny

    • 64
    • 84

    Mostly Sunny

    • 64
    • 84

    Partly Sunny

    • 62
    • 83

    Chance Rain Showers

Today 13 Sep Northern Cook

Mostly cloudy. Showers and Thunderstorms likely late in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the upper 70s. Southeast Winds 5 to 10 Mph. Chance of precipitation 70 percent.

Tonight 13 Sep Northern Cook

Mostly cloudy early in the Evening, then clearing. A slight chance of Showers and Thunderstorms early in the evening. Patchy fog after midnight. Lows in the mid 60s. Southeast Winds 5 to 10 Mph. Chance of precipitation 20 percent.

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Lake Arlington Temperature Statistics

September Temperature

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

  • Lowest 7 September, 2025

    46.9 °F

  • Average September

    63.3 °F

  • Highest 10 September, 2025

    80.1 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    44.1 °F

  • Average 2020–2025

    52.9 °F

  • Average High 2020–2025

    61.5 °F
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