Winnetka Weather Forecast

    • 72
    • 83

    Chance Thunderstorms

    • 66
    • 78

    Rain Showers

    • 65
    • 75

    Slight Chance Thunderstorms

    • 67
    • 80

    Slight Chance Thunderstorms

    • 68
    • 83

    Chance Rain Showers

    • 70
    • 84

    Chance Thunderstorms

    • 68
    • 83

    Chance Thunderstorms

Today 4 Aug Northern Cook

Partly cloudy. Temperatures in the mid 80s. Southwest Winds around 10 Mph.

Tonight 4 Aug Northern Cook

Partly cloudy in the Evening, then becoming mostly cloudy. A slight chance of Showers after midnight. A slight chance of Thunderstorms after midnight. A chance of Showers late. Lows in the lower 70s. Southwest Winds around 5 Mph. Chance of precipitation 50 percent.

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  • Temperature Real-Time

Winnetka Temperature Statistics

August Temperature

Chicago / Wheeling, Pal-Waukee Airport (8.7 miles)

  • Lowest 2 August, 2026

    64.9 °F

  • Average August

    69.2 °F

  • Highest 2 August, 2026

    75 °F

Climate (2021–2026)

Chicago / Wheeling, Pal-Waukee Airport (8.7 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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