Westmoreland Grove Southwest Weather Forecast

    • 9
    • 46

    Rain

    • 18
    • 23

    Slight Chance Snow Showers

    • 8
    • 37

    Slight Chance Snow Showers

    • 10
    • 18

    Partly Sunny

    • 29
    • 35

    Mostly Cloudy

    • 25
    • 40

    Mostly Cloudy

Today 18 Dec Waukesha

Light rain until late Afternoon, then chance of light rain Showers late in the afternoon. Highs in the mid 40s. Southwest Winds 15 to 20 Mph. Chance of precipitation near 100 percent.

Tonight 18 Dec Waukesha

Much Colder. Breezy. Mostly cloudy. Snow Showers likely in the Evening, then slight chance of snow Showers in the late evening and overnight. Little snow accumulation. Lows around 8. West Winds 15 to 25 Mph with Gusts to around 40 Mph. Chance of snow 70 percent.

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Westmoreland Grove Southwest Temperature Statistics

December Temperature

Waukesha County Airport (3.1 miles)

  • Lowest 14 December, 2025

    -5.8 °F

  • Average December

    17.5 °F

  • Highest 10 December, 2025

    35.6 °F

Climate (2020–Present)

Waukesha County Airport (3.1 miles)

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  • Average Low 2020–2025

    38.3 °F

  • Average 2020–2025

    45.8 °F

  • Average High 2020–2025

    56.3 °F
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