Hartland Weather Forecast

    • 52
    • 68

    Chance Rain Showers

    • 48
    • 59

    Rain Showers Likely

    • 51
    • 69

    Slight Chance Rain Showers

    • 51
    • 76

    Slight Chance Thunderstorms

    • 47
    • 72

    Slight Chance Rain Showers

    • 51
    • 72

    Mostly Sunny

    • 59
    • 79

    Mostly Sunny

Today 27 May Waukesha

Mostly cloudy. Scattered Sprinkles. Northeast Winds 10 to 15 Mph.

Tonight 27 May Waukesha

Mostly cloudy. Chance of Sprinkles late in the evening. Chance of light rain Showers after midnight. Lows in the lower 50s. Northeast Winds 5 to 10 Mph. Chance of Showers 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hartland Temperature Statistics

May Temperature

Waukesha County Airport (6.2 miles)

  • Lowest 4 May, 2025

    35.6 °F

  • Average May

    52.2 °F

  • Highest 15 May, 2025

    82.4 °F

Climate (2020–Present)

Waukesha County Airport (6.2 miles)

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  • Average Low 2020–2025

    38.1 °F

  • Average 2020–2025

    45.6 °F

  • Average High 2020–2025

    56.2 °F
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