Irwin Weather Forecast

    • 23
    • 31

    Snow

    • 4
    • 26

    Partly Sunny

    • 16
    • 28

    Mostly Cloudy

    • 20
    • 32

    Mostly Cloudy

    • 17
    • 30

    Chance Snow

    • 15
    • 27

    Chance Snow

Today 3 Dec Union

Partly cloudy until late Afternoon, then becoming mostly cloudy. Highs in the lower 30s. Southwest Winds 5 to 10 Mph.

Tonight 3 Dec Union

Mostly cloudy. A chance of snow in the Evening, then snow after midnight. Little or no snow accumulation. Lows in the lower 20s. West Winds 5 to 10 Mph. Chance of snow 80 percent.

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Irwin Temperature Statistics

December Temperature

Marysville Union County Airport (9.9 miles)

  • Lowest 1 December, 2025

    14.9 °F

  • Average December

    25.8 °F

  • Highest 1 December, 2025

    32.2 °F

Climate (2020–Present)

Marysville Union County Airport (9.9 miles)

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  • Average Low 2020–2025

    42.8 °F

  • Average 2020–2025

    52.3 °F

  • Average High 2020–2025

    62 °F
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