Arnold Weather Forecast

    • 21
    • 28

    Chance Snow Showers

    • 33
    • 39

    Chance Rain/Snow

    • 40
    • 55

    Slight Chance Rain/Snow

    • 43
    • 63

    Mostly Cloudy

    • 46
    • 64

    Partly Sunny

    • 35
    • 66

    Mostly Cloudy

Today 17 Mar Union

Mostly cloudy until late Afternoon, then becoming partly cloudy. A 40 percent chance of snow Showers. Cold with Highs in the upper 20s. West Winds around 15 Mph with Gusts up to 25 Mph.

Tonight 17 Mar Union

Partly cloudy. A slight chance of snow Showers in the evening. Lows around 20. West Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming southwest after midnight. Chance of snow 20 percent.

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Arnold Temperature Statistics

March Temperature

Marysville Union County Airport (7.5 miles)

  • Lowest 2 March, 2026

    21.2 °F

  • Average March

    48.3 °F

  • Highest 6 March, 2026

    75.2 °F

Climate (2021–Present)

Marysville Union County Airport (7.5 miles)

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  • Average Low 2021–2026

    43 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    62.4 °F
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