Hartland Weather Forecast

    • 43
    • 65

    Partly Sunny

    • 26
    • 44

    Chance Rain

    • 29
    • 44

    Mostly Cloudy

    • 32
    • 54

    Mostly Cloudy

    • 36
    • 47

    Mostly Cloudy

    • 26
    • 59

    Slight Chance Rain

Today 21 Mar Waukesha

Mostly cloudy in the morning then becoming mostly sunny. Highs in the mid 60s. South Winds 5 to 15 Mph.

Tonight 21 Mar Waukesha

Partly cloudy until early morning then becoming mostly cloudy. Lows in the mid 40s. Southwest Winds 5 to 10 Mph shifting to the north after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hartland Temperature Statistics

March Temperature

Waukesha County Airport (6.2 miles)

  • Lowest 1 March, 2026

    14 °F

  • Average March

    35.6 °F

  • Highest 9 March, 2026

    69.8 °F

Climate (2021–Present)

Waukesha County Airport (6.2 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    45.9 °F

  • Average High 2021–2026

    56.5 °F
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