Hartland Weather Forecast

    • 44
    • 67

    Decreasing Clouds

    • 42
    • 63

    Increasing Clouds

    • 47
    • 62

    Mostly Cloudy

    • 50
    • 67

    Rain Showers

    • 42
    • 60

    Mostly Cloudy

    • 39
    • 60

    Partly Sunny

    • 39
    • 59

    Mostly Cloudy

Today 24 Apr Waukesha

Partly sunny. Northwest Winds 10 to 15 Mph.

Tonight 24 Apr Waukesha

Colder. Partly cloudy. Lows in the mid 40s. North Winds 5 to 10 Mph.

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Hartland Temperature Statistics

April Temperature

Waukesha County Airport (6.2 miles)

  • Lowest 7 April, 2026

    23 °F

  • Average April

    45.9 °F

  • Highest 17 April, 2026

    77 °F

Climate (2021–Present)

Waukesha County Airport (6.2 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    46 °F

  • Average High 2021–2026

    56.6 °F
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