Winnetka Weather Forecast

    • 39
    • 46

    Rain Showers

    • 41
    • 42

    Chance Rain

    • 19
    • 55

    Rain/Snow Likely

    • 15
    • 25

    Slight Chance Snow

    • 21
    • 29

    Mostly Cloudy

    • 17
    • 30

    Mostly Cloudy

Today 26 Dec Northern Cook

Cloudy. Areas of fog in the morning. Periods of Showers and drizzle early in the morning. Scattered Showers with Areas of drizzle late in the morning. Highs in the upper 40s. West Winds 5 to 10 Mph, becoming northwest in the afternoon. Chance of precipitation 80 percent.

Tonight 26 Dec Northern Cook

Mostly cloudy. Patchy fog after midnight. Lows in the mid 30s. Northwest Winds around 5 Mph, becoming northeast after midnight.

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Winnetka Temperature Statistics

December Temperature

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

  • Lowest 14 December, 2025

    -2 °F

  • Average December

    25.2 °F

  • Highest 23 December, 2025

    54 °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

    61.4 °F
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