Union Weather Forecast

    • 21
    • 47

    Becoming Sunny

    • 28
    • 49

    Mostly Sunny

    • 25
    • 42

    Mostly Sunny

    • 29
    • 51

    Chance Rain

    • 23
    • 43

    Slight Chance Rain

    • 30
    • 40

    Mostly Cloudy

    • 18
    • 43

    Mostly Cloudy

Today 27 Jan Hardin

Mostly sunny and breezy. Highs in the mid 40s. West Winds 20 to 25 Mph with Gusts up to 35 Mph.

Tonight 27 Jan Hardin

Mostly cloudy Early, then clearing. Lows in the lower 20s. West Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming northwest 5 to 10 Mph after midnight.

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Union Temperature Statistics

January Temperature

Marshalltown, Marshalltown Municipal Airport (11.8 miles)

  • Lowest 21 January, 2025

    -12.2 °F

  • Average January

    16 °F

  • Highest 17 January, 2025

    49.6 °F

Climate (2020–Present)

Marshalltown, Marshalltown Municipal Airport (11.8 miles)

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  • Average Low 2020–2025

    39.3 °F

  • Average 2020–2025

    49.8 °F

  • Average High 2020–2025

    60.3 °F
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