Arnold Weather Forecast

    • 70
    • 94

    Mostly Sunny

    • 70
    • 94

    Increasing Clouds

    • 67
    • 91

    Slight Chance Rain Showers

    • 67
    • 89

    Slight Chance Rain Showers

    • 65
    • 88

    Chance Rain Showers

    • 62
    • 85

    Mostly Sunny

    • 60
    • 84

    Mostly Sunny

Today 22 Aug West Slope Northern Sierra Nevada

Mostly sunny. At higher Elevations, a slight chance of Showers and Thunderstorms late in the afternoon. Highs 76 to 91 higher Elevations. 89 to 99 lower Elevations. Prevailing southeast Winds up to 10 Mph shifting to the southwest in the afternoon.

Tonight 22 Aug West Slope Northern Sierra Nevada

Mostly clear. Lows 54 to 69 higher Elevations. 64 to 78 lower Elevations. Light Winds becoming east up to 10 Mph after midnight.

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Arnold Temperature Statistics

August Temperature

COLUMBIA (15.5 miles)

  • Lowest 4 August, 2025

    53.6 °F

  • Average August

    75.8 °F

  • Highest 10 August, 2025

    100.4 °F

Climate (2020–Present)

COLUMBIA (15.5 miles)

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  • Average Low 2020–2025

    46.6 °F

  • Average 2020–2025

    59.8 °F

  • Average High 2020–2025

    73.6 °F
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