Hartland Weather Forecast

    • 58
    • 80

    Partly Sunny

    • 61
    • 81

    Partly Sunny

    • 67
    • 79

    Rain Showers Likely

    • 71
    • 85

    Chance Thunderstorms

    • 71
    • 86

    Chance Rain Showers

    • 69
    • 86

    Chance Rain Showers

    • 68
    • 85

    Chance Rain Showers

Today 27 Aug Waukesha

Mostly sunny. North Winds 5 to 10 Mph.

Tonight 27 Aug Waukesha

Partly cloudy. Lows in the upper 50s. East Winds up to 5 Mph through around midnight becoming calm.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Hartland Temperature Statistics

August Temperature

Waukesha County Airport (6.2 miles)

  • Lowest 24 August, 2026

    51.8 °F

  • Average August

    70 °F

  • Highest 16 August, 2026

    86 °F

Climate (2021–2026)

Waukesha County Airport (6.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    46.2 °F

  • Average High 2021–2026

    56.6 °F
Get WillyWeather+ to remove ads