Oconomowoc Weather Forecast

    • 68
    • 85

    Rain Showers Likely

    • 64
    • 84

    Chance Thunderstorms

    • 66
    • 84

    Chance Thunderstorms

    • 71
    • 91

    Chance Thunderstorms

    • 70
    • 91

    Chance Thunderstorms

    • 62
    • 87

    Slight Chance Thunderstorms

Today 24 Jul Waukesha

Warm and humid. Partly sunny. Chance of Showers in the Morning, then chance of Showers and Thunderstorms in the late morning and afternoon. Highs in the upper 80s. West Winds 10 to 15 Mph. Chance of precipitation 50 percent. Highest heat index Readings 97 to 102 in the late morning and afternoon.

Tonight 24 Jul Waukesha

Partly cloudy. A 20 percent chance of Showers and Thunderstorms early in the morning. Near steady temperature in the mid 70s. Southwest Winds 5 to 10 Mph.

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Oconomowoc Temperature Statistics

July Temperature

Watertown (11.8 miles)

  • Lowest 18 July, 2025

    48.2 °F

  • Average July

    71.5 °F

  • Highest 3 July, 2025

    89.6 °F

Climate (2020–Present)

Watertown (11.8 miles)

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  • Average Low 2020–2025

    36.4 °F

  • Average 2020–2025

    46.1 °F

  • Average High 2020–2025

    55.3 °F
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