Hartland Weather Forecast

    • 20
    • 45

    Increasing Clouds

    • 9
    • 23

    Chance Snow

    • 18
    • 24

    Mostly Cloudy

    • 13
    • 30

    Snow Likely

    • 3
    • 17

    Chance Snow

    • 3
    • 14

    Slight Chance Snow

Today 13 Jan Waukesha

Partly sunny. Chance of Sprinkles late in the afternoon. Highs in the mid 40s. West Winds 10 to 20 Mph.

Tonight 13 Jan Waukesha

Cloudy. Chance of Sprinkles early in the morning. Near steady temperature in the lower 30s. Southwest Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hartland Temperature Statistics

January Temperature

Waukesha County Airport (6.2 miles)

  • Lowest 1 January, 2026

    8.6 °F

  • Average January

    28.7 °F

  • Highest 9 January, 2026

    57.2 °F

Climate (2021–Present)

Waukesha County Airport (6.2 miles)

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  • Average Low 2021–2026

    38.4 °F

  • Average 2021–2026

    45.8 °F

  • Average High 2021–2026

    56.4 °F
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