Northbrook Weather Forecast

    • 61
    • 78

    Becoming Sunny

    • 63
    • 77

    Mostly Sunny

    • 62
    • 82

    Partly Sunny

    • 65
    • 76

    Mostly Cloudy

    • 66
    • 86

    Chance Rain Showers

    • 61
    • 77

    Chance Rain Showers

Today 10 Sep Northern Cook

Mostly cloudy late in the Morning, then becoming partly cloudy. Highs in the upper 70s. North Winds 5 to 10 Mph.

Tonight 10 Sep Northern Cook

Clear. Lows in the upper 50s. East Winds around 5 Mph in the Evening, becoming light and variable.

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Northbrook Temperature Statistics

September Temperature

Chicago / Wheeling, Pal-Waukee Airport (3.7 miles)

  • Lowest 7 September, 2026

    59.6 °F

  • Average September

    78.2 °F

  • Highest 2 September, 2026

    96.7 °F

Climate (2021–2026)

Chicago / Wheeling, Pal-Waukee Airport (3.7 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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