Wilmette Weather Forecast

    • 37
    • 43

    Slight Chance Rain

    • 33
    • 46

    Mostly Cloudy

    • 39
    • 41

    Rain Likely

    • 40
    • 44

    Chance Rain Showers

    • 38
    • 48

    Mostly Cloudy

    • 28
    • 47

    Chance Rain

    • 16
    • 33

    Mostly Cloudy

Today 22 Dec Northern Cook

Mostly cloudy. A slight chance of Sprinkles in the afternoon. Highs in the lower 40s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 22 Dec Northern Cook

Cloudy. A slight chance of rain in the evening. Lows in the mid 30s. Southwest Winds around 10 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Wilmette Temperature Statistics

December Temperature

Chicago / Wheeling, Pal-Waukee Airport (9.9 miles)

  • Lowest 14 December, 2025

    -2 °F

  • Average December

    23.6 °F

  • Highest 18 December, 2025

    51.1 °F

Climate (2020–Present)

Chicago / Wheeling, Pal-Waukee Airport (9.9 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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