Oconomowoc Weather Forecast

    • 42
    • 66

    Decreasing Clouds

    • 48
    • 66

    Partly Sunny

    • 50
    • 63

    Rain Showers Likely

    • 49
    • 61

    Chance Rain Showers

    • 52
    • 68

    Chance Rain Showers

    • 51
    • 76

    Slight Chance Rain Showers

Today 25 May Waukesha

Mostly sunny. Highs in the mid 60s. Northeast Winds up to 10 Mph.

Tonight 25 May Waukesha

Partly cloudy in the evening then becoming mostly clear. Lows in the lower 40s. East Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Oconomowoc Temperature Statistics

May Temperature

Watertown (11.8 miles)

  • Lowest 9 May, 2025

    31.6 °F

  • Average May

    55.1 °F

  • Highest 15 May, 2025

    85.5 °F

Climate (2020–Present)

Watertown (11.8 miles)

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  • Average Low 2020–2025

    36.4 °F

  • Average 2020–2025

    46.2 °F

  • Average High 2020–2025

    55.3 °F
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