Hartland Weather Forecast

    • 46
    • 71

    Sunny

    • 56
    • 82

    Mostly Sunny

    • 50
    • 72

    Mostly Sunny

    • 53
    • 77

    Mostly Sunny

    • 52
    • 78

    Mostly Sunny

    • 52
    • 77

    Mostly Sunny

Today 28 May Waukesha

Cooler, sunny. Highs around 70. Northeast Winds 10 to 15 Mph.

Tonight 28 May Waukesha

Mostly clear. Lows in the lower 50s. Northeast Winds 10 to 15 Mph.

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Hartland Temperature Statistics

May Temperature

Waukesha County Airport (6.2 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    53 °F

  • Highest 16 May, 2026

    82.4 °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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