Hartland Weather Forecast

    • 66
    • 90

    Smoke

    • 72
    • 90

    Isolated Thunderstorms

    • 61
    • 87

    Chance Rain Showers

    • 63
    • 83

    Partly Sunny

    • 66
    • 87

    Chance Thunderstorms

    • 58
    • 82

    Slight Chance Rain Showers

    • 57
    • 78

    Partly Sunny

Today 16 Jul Waukesha

Partly sunny. Areas of smoke. Highs in the upper 80s. East Winds 5 to 10 Mph.

Tonight 16 Jul Waukesha

Partly cloudy. Areas of smoke. Lows in the upper 60s. Southeast Winds up to 10 Mph.

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Hartland Temperature Statistics

July Temperature

Waukesha County Airport (6.2 miles)

  • Lowest 7 July, 2026

    59 °F

  • Average July

    74.4 °F

  • Highest 14 July, 2026

    96.8 °F

Climate (2021–2026)

Waukesha County Airport (6.2 miles)

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  • Average Low 2021–2026

    38.6 °F

  • Average 2021–2026

    46.1 °F

  • Average High 2021–2026

    56.6 °F
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