Hartland Weather Forecast

    • 47
    • 67

    Chance Rain Showers

    • 56
    • 76

    Chance Thunderstorms

    • 52
    • 82

    Chance Rain Showers

    • 59
    • 74

    Chance Thunderstorms

    • 62
    • 85

    Rain Showers Likely

    • 51
    • 75

    Chance Rain Showers

Today 14 May Waukesha

Sunny. Highs in the upper 60s. Northeast Winds up to 5 Mph shifting to the southeast in the afternoon.

Tonight 14 May Waukesha

Colder, clear. Lows in the upper 30s. Northwest Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hartland Temperature Statistics

May Temperature

Waukesha County Airport (6.2 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    47.3 °F

  • Highest 4 May, 2026

    78.8 °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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