Friess Lake Weather Forecast

    • 62
    • 72

    Decreasing Clouds

    • 58
    • 76

    Mostly Sunny

    • 61
    • 78

    Chance Rain Showers

    • 53
    • 74

    Mostly Sunny

    • 49
    • 67

    Mostly Sunny

    • 48
    • 66

    Mostly Sunny

Today 20 Aug Washington

Partly sunny. Slight chance of Sprinkles through the day. Near steady temperature in the lower 70s. Northeast Winds 5 to 10 Mph.

Tonight 20 Aug Washington

Partly cloudy. Lows in the lower 60s. Northeast Winds 5 to 10 Mph.

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Friess Lake Temperature Statistics

August Temperature

Waukesha County Airport (13.7 miles)

  • Lowest 2 August, 2025

    51.8 °F

  • Average August

    70.3 °F

  • Highest 9 August, 2025

    91.4 °F

Climate (2020–Present)

Waukesha County Airport (13.7 miles)

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  • Average Low 2020–2025

    38.2 °F

  • Average 2020–2025

    45.7 °F

  • Average High 2020–2025

    56.2 °F
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