Winnetka Weather Forecast

    • 68
    • 73

    Decreasing Clouds

    • 69
    • 79

    Partly Sunny

    • 74
    • 84

    Partly Sunny

    • 79
    • 96

    Mostly Sunny

    • 75
    • 96

    Chance Thunderstorms

    • 72
    • 87

    Chance Thunderstorms

    • 72
    • 84

    Chance Thunderstorms

Today 20 Jul Northern Cook

Mostly cloudy. A slight chance of Showers and Thunderstorms late in the morning. Highs in the mid 70s. Northeast Winds around 10 Mph. Chance of precipitation 20 percent.

Tonight 20 Jul Northern Cook

Partly cloudy. Lows in the mid 60s. Northeast Winds 5 to 10 Mph.

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Winnetka Temperature Statistics

July Temperature

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

  • Lowest 18 July, 2025

    59 °F

  • Average July

    76.5 °F

  • Highest 5 July, 2025

    93.7 °F

Climate (2020–Present)

Chicago / Wheeling, Pal-Waukee Airport (8.7 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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