Waukesha Weather Forecast

    • 63
    • 77

    Mostly Cloudy

    • 61
    • 76

    Chance Rain Showers

    • 58
    • 77

    Mostly Sunny

    • 61
    • 80

    Partly Sunny

    • 54
    • 76

    Sunny

    • 50
    • 68

    Mostly Sunny

Today 19 Aug Waukesha

Mostly cloudy. Near steady temperature in the mid 70s. North Winds 5 to 10 Mph.

Tonight 19 Aug Waukesha

Mostly cloudy with chance of Sprinkles through around Midnight, then mostly cloudy after midnight. Partly cloudy with chance of light Showers early in the morning. Patchy fog early in the morning. Lows in the lower 60s. North Winds up to 5 Mph. Chance of Showers 20 percent.

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Waukesha Temperature Statistics

August Temperature

Waukesha County Airport (1.9 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 (1.9 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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