Union Weather Forecast

    • 24
    • 41

    Becoming Sunny

    • 32
    • 53

    Chance Rain

    • 22
    • 39

    Chance Rain

    • 29
    • 35

    Chance Rain/Snow

    • 23
    • 47

    Mostly Cloudy

    • 16
    • 32

    Mostly Cloudy

Today 29 Jan Waukesha

Mostly sunny. Highs in the lower 40s. Northwest Winds 10 to 15 Mph.

Tonight 29 Jan Waukesha

Partly cloudy until early morning then becoming clear. Lows in the mid 20s. West Winds up to 5 Mph shifting to the south after midnight.

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  • Temperature Real-Time

Union Temperature Statistics

January Temperature

Watertown (12.4 miles)

  • Lowest 24 January, 2025

    -13.9 °F

  • Average January

    16.4 °F

  • Highest 17 January, 2025

    49.5 °F

Climate (2020–Present)

Watertown (12.4 miles)

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  • Average Low 2020–2025

    36.4 °F

  • Average 2020–2025

    46 °F

  • Average High 2020–2025

    55 °F
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