Murphy Lake Weather Forecast

    • 72
    • 87

    Isolated Thunderstorms

    • 71
    • 88

    Chance Thunderstorms

    • 68
    • 85

    Rain Showers Likely

    • 67
    • 84

    Rain Showers Likely

    • 65
    • 82

    Chance Rain Showers

    • 63
    • 81

    Chance Rain Showers

    • 59
    • 77

    Mostly Cloudy

Today 1 Sep Washington

Partly sunny. Heat index Readings 103 to 108. Southwest Winds up to 5 Mph.

Tonight 1 Sep Washington

Partly cloudy with a 20 percent chance of light Showers and Thunderstorms until early Morning, then partly cloudy early in the morning. Lows in the lower 70s. Southwest Winds up to 5 Mph.

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Murphy Lake Temperature Statistics

September Temperature

Waukesha County Airport (13.7 miles)

  • Lowest

  • Average September

  • Highest

Climate (2021–2026)

Waukesha County Airport (13.7 miles)

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  • Average Low 2021–2026

    38.7 °F
  • Average 2021–2026

    46.2 °F
  • Average High 2021–2026

    56.6 °F
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