Union County Airport Weather Forecast

    • 13
    • 20

    Decreasing Clouds

    • 29
    • 34

    Partly Sunny

    • 29
    • 40

    Mostly Cloudy

    • 19
    • 50

    Rain

    • 20
    • 27

    Slight Chance Rain

    • 32
    • 45

    Chance Rain

Today 15 Dec Union

Partly cloudy. Cold with Highs 15 to 20. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Wind chill Values as low as 7 below this morning.

Tonight 15 Dec Union

Partly cloudy in the Evening, then clearing. Lows 10 to 15. Southwest Winds 5 to 10 Mph.

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Union County Airport Temperature Statistics

December Temperature

Marysville Union County Airport (0 miles)

  • Lowest 5 December, 2025

    3.4 °F

  • Average December

    26.7 °F

  • Highest 10 December, 2025

    39.4 °F

Climate (2020–Present)

Marysville Union County Airport (0 miles)

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  • Average Low 2020–2025

    42.7 °F

  • Average 2020–2025

    52.2 °F

  • Average High 2020–2025

    62 °F
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