Arnold Weather Forecast

    • 39
    • 55

    Sunny

    • 36
    • 55

    Mostly Sunny

    • 39
    • 52

    Mostly Cloudy

    • 38
    • 54

    Partly Sunny

    • 41
    • 56

    Mostly Cloudy

    • 41
    • 56

    Mostly Cloudy

Today 23 Jan West Slope Northern Sierra Nevada

Sunny. Patchy dense fog in the morning. Highs 39 to 54 higher Elevations. 51 to 59 lower Elevations. Light Winds.

Tonight 23 Jan West Slope Northern Sierra Nevada

Clear. In the Valleys, patchy dense fog after midnight. Colder. Lows 19 to 34 higher Elevations. 32 to 43 lower Elevations. Prevailing northeast Winds up to 15 Mph with Gusts to around 30 Mph.

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Arnold Temperature Statistics

January Temperature

COLUMBIA (15.5 miles)

  • Lowest 9 January, 2026

    28.4 °F

  • Average January

    48.1 °F

  • Highest 15 January, 2026

    71.6 °F

Climate (2021–Present)

COLUMBIA (15.5 miles)

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  • Average Low 2021–2026

    46.9 °F

  • Average 2021–2026

    59.8 °F

  • Average High 2021–2026

    73.6 °F
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