Arnold Weather Forecast

    • 43
    • 73

    Increasing Clouds

    • 32
    • 66

    Partly Sunny

    • 36
    • 73

    Partly Sunny

    • 38
    • 77

    Mostly Cloudy

    • 42
    • 76

    Partly Sunny

    • 44
    • 74

    Partly Sunny

    • 42
    • 65

    Chance Rain

Today 24 Mar Northwestern Mendocino Interior

Sunny. Highs 68 to 83.

Tonight 24 Mar Northwestern Mendocino Interior

Partly cloudy. Lows 42 to 52.

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Arnold Temperature Statistics

March Temperature

Ukiah Municipal Airport (28.6 miles)

  • Lowest 6 March, 2026

    37 °F

  • Average March

    60.5 °F

  • Highest 20 March, 2026

    94.6 °F

Climate (2021–Present)

Ukiah Municipal Airport (28.6 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    61 °F

  • Average High 2021–2026

    76.3 °F
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