Arnold Weather Forecast

    • 50
    • 64

    Rain Showers

    • 50
    • 71

    Chance Rain Showers

    • 42
    • 64

    Chance Rain Showers

    • 39
    • 59

    Partly Sunny

    • 48
    • 62

    Rain Showers Likely

    • 45
    • 64

    Chance Rain Showers

Today 8 May Union

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms this afternoon. Highs in the lower 60s. West Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 8 May Union

Showers with a slight chance of Thunderstorms in the Evening, then Showers after midnight. Lows around 50. Southwest Winds 5 to 10 Mph. Chance of rain 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Arnold Temperature Statistics

May Temperature

Marysville Union County Airport (7.5 miles)

  • Lowest 2 May, 2026

    33.8 °F

  • Average May

    51.2 °F

  • Highest 4 May, 2026

    75.2 °F

Climate (2021–Present)

Marysville Union County Airport (7.5 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    62.5 °F
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