Oconomowoc Heights Weather Forecast

    • 9
    • 21

    Mostly Cloudy

    • 25
    • 35

    Mostly Cloudy

    • 27
    • 35

    Rain Likely

    • 6
    • 41

    Chance Rain/Snow

    • 15
    • 23

    Mostly Cloudy

    • 12
    • 36

    Mostly Cloudy

    • 17
    • 27

    Mostly Cloudy

Today 15 Dec Waukesha

Mostly cloudy. Southwest Winds 5 to 10 Mph.

Tonight 15 Dec Waukesha

Mostly cloudy then becoming partly cloudy in the late evening and early morning then becoming mostly cloudy. Lows around 10. Southwest Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Oconomowoc Heights Temperature Statistics

December Temperature

Watertown (12.4 miles)

  • Lowest 7 December, 2025

    -2.7 °F

  • Average December

    17 °F

  • Highest 10 December, 2025

    33.8 °F

Climate (2020–Present)

Watertown (12.4 miles)

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  • Average Low 2020–2025

    35.7 °F

  • Average 2020–2025

    45.5 °F

  • Average High 2020–2025

    54.5 °F
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