Friess Lake Weather Forecast

    • 42
    • 73

    Becoming Sunny

    • 50
    • 69

    Mostly Sunny

    • 60
    • 78

    Rain Showers Likely

    • 45
    • 71

    Rain Showers Likely

    • 42
    • 62

    Mostly Cloudy

    • 45
    • 62

    Chance Rain Showers

Today 21 Apr Washington

Warmer. Mostly sunny. Highs in the lower 70s. West Winds 5 to 15 Mph.

Tonight 21 Apr Washington

Mostly clear. Lows in the lower 40s. Northeast Winds up to 5 Mph.

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Friess Lake Temperature Statistics

April Temperature

Waukesha County Airport (13.7 miles)

  • Lowest 7 April, 2026

    23 °F

  • Average April

    46.4 °F

  • Highest 17 April, 2026

    77 °F

Climate (2021–Present)

Waukesha County Airport (13.7 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    46 °F

  • Average High 2021–2026

    56.6 °F
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