Hartland Weather Forecast

    • 56
    • 79

    Mostly Cloudy

    • 60
    • 80

    Partly Sunny

    • 68
    • 84

    Partly Sunny

    • 71
    • 91

    Chance Rain Showers

    • 67
    • 92

    Chance Rain Showers

    • 63
    • 86

    Mostly Sunny

    • 62
    • 84

    Partly Sunny

Today 23 Jul Waukesha

Partly sunny. Southwest Winds 5 to 10 Mph.

Tonight 23 Jul Waukesha

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 50s. Southwest Winds up to 5 Mph.

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Hartland Temperature Statistics

July Temperature

Waukesha County Airport (6.2 miles)

  • Lowest 7 July, 2026

    59 °F

  • Average July

    76.3 °F

  • Highest 14 July, 2026

    96.8 °F

Climate (2021–2026)

Waukesha County Airport (6.2 miles)

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  • Average Low 2021–2026

    38.6 °F

  • Average 2021–2026

    46.1 °F

  • Average High 2021–2026

    56.7 °F
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