Irwin Weather Forecast

    • 21
    • 39

    Snow Showers

    • 21
    • 29

    Snow Likely

    • 15
    • 32

    Snow Likely

    • 6
    • 23

    Chance Snow

    • 1
    • 14

    Partly Sunny

    • 13
    • 22

    Mostly Cloudy

Today 10 Dec Union

Rain and snow this Morning, then snow and rain Showers this afternoon. Little or no snow accumulation. Breezy with Highs in the upper 30s. Southwest Winds 20 to 25 Mph, becoming west late. Gusts up to 45 Mph. Chance of precipitation 100 percent.

Tonight 10 Dec Union

Mostly cloudy with scattered snow Showers in the Evening, then partly cloudy with isolated snow Showers after midnight. Cooler with Lows around 20. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of snow 30 percent.

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Irwin Temperature Statistics

December Temperature

Marysville Union County Airport (9.9 miles)

  • Lowest 5 December, 2025

    3.4 °F

  • Average December

    25.1 °F

  • Highest 7 December, 2025

    35.8 °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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