Arnold Weather Forecast

    • 49
    • 71

    Mostly Cloudy

    • 47
    • 70

    Becoming Sunny

    • 47
    • 68

    Mostly Sunny

    • 47
    • 67

    Partly Sunny

    • 46
    • 62

    Rain Likely

    • 44
    • 58

    Rain Showers

    • 42
    • 58

    Chance Rain

Today 5 Apr West Slope Northern Sierra Nevada

Mostly sunny in the morning then becoming partly cloudy. Highs 54 to 69 higher Elevations. 66 to 76 lower Elevations. Prevailing east Winds up to 10 Mph shifting to the southwest in the afternoon.

Tonight 5 Apr West Slope Northern Sierra Nevada

Mostly cloudy. Lows 34 to 49 higher Elevations. 44 to 58 lower Elevations. Light Winds. Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

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Arnold Temperature Statistics

April Temperature

COLUMBIA (15.5 miles)

  • Lowest 3 April, 2026

    37.4 °F

  • Average April

    52.8 °F

  • Highest 3 April, 2026

    66.2 °F

Climate (2021–Present)

COLUMBIA (15.5 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    60 °F

  • Average High 2021–2026

    73.8 °F
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