Northbrook Weather Forecast

    • 61
    • 78

    Mostly Sunny

    • 64
    • 81

    Chance Thunderstorms

    • 62
    • 77

    Mostly Sunny

    • 60
    • 74

    Partly Sunny

    • 61
    • 77

    Partly Sunny

    • 65
    • 80

    Slight Chance Thunderstorms

Today 20 Aug Northern Cook

Sunny. Highs in the upper 70s. Northeast Winds around 5 Mph.

Tonight 20 Aug Northern Cook

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 60s. Southeast Winds around 5 Mph, becoming southwest after midnight.

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Northbrook Temperature Statistics

August Temperature

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

  • Lowest 3 August, 2026

    61.6 °F

  • Average August

    74.3 °F

  • Highest 7 August, 2026

    87.7 °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

    52.9 °F

  • Average High 2021–2026

    61.6 °F
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