Waukesha Weather Forecast

    • 69
    • 80

    Chance Thunderstorms

    • 61
    • 82

    Slight Chance Thunderstorms

    • 62
    • 79

    Partly Sunny

    • 63
    • 81

    Rain Showers Likely

    • 56
    • 75

    Partly Sunny

    • 57
    • 75

    Partly Sunny

    • 60
    • 76

    Slight Chance Rain Showers

Today 15 Aug Waukesha

Partly sunny with isolated light Showers and Thunderstorms. Near steady temperature in the upper 70s. Southeast Winds 5 to 10 Mph. Chance of precipitation 20 percent.

Tonight 15 Aug Waukesha

Partly cloudy with slight chance of light Showers through around Midnight, then cloudy with chance of light Showers and Thunderstorms after midnight. Lows around 70. Southeast Winds up to 5 Mph shifting to the southwest after midnight. Chance of precipitation 50 percent.

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Waukesha Temperature Statistics

August Temperature

Waukesha County Airport (1.9 miles)

  • Lowest 3 August, 2026

    57.2 °F

  • Average August

    72.2 °F

  • Highest 4 August, 2026

    84.2 °F

Climate (2021–2026)

Waukesha County Airport (1.9 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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