Sierra Heights Weather Forecast

    • 61
    • 82

    Increasing Clouds

    • 61
    • 76

    Chance Thunderstorms

    • 61
    • 75

    Chance Thunderstorms

    • 61
    • 77

    Chance Thunderstorms

    • 59
    • 77

    Chance Rain Showers

    • 56
    • 75

    Chance Rain Showers

Today 18 Sep Waukesha

Sunny. Highs in the lower 80s. South Winds up to 5 Mph shifting to the east in the afternoon.

Tonight 18 Sep Waukesha

Partly cloudy until early morning then becoming mostly cloudy. Lows in the lower 60s. Northeast Winds up to 10 Mph.

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  • Temperature Real-Time

Sierra Heights Temperature Statistics

September Temperature

Milwaukee-Timmerman (4.3 miles)

  • Lowest 4 September, 2025

    41 °F

  • Average September

    58.4 °F

  • Highest 16 September, 2025

    80.6 °F

Climate (2020–Present)

Milwaukee-Timmerman (4.3 miles)

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  • Average Low 2020–2025

    40 °F

  • Average 2020–2025

    47 °F

  • Average High 2020–2025

    56.9 °F
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