Potter Valley Weather Forecast

    • 47
    • 89

    Mostly Cloudy

    • 43
    • 79

    Increasing Clouds

    • 42
    • 81

    Mostly Cloudy

    • 41
    • 77

    Mostly Sunny

    • 45
    • 82

    Sunny

    • 48
    • 89

    Sunny

    • 49
    • 91

    Mostly Sunny

Today 24 Sep Northwestern Interior Mendocino

Mostly clear. Lows 47 to 57. Highs 79 to 94.

Tonight 24 Sep Northwestern Interior Mendocino

Mostly cloudy then becoming partly cloudy overnight then becoming mostly cloudy. Slight chance of rain overnight. Lows 46 to 56.

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Potter Valley Temperature Statistics

September Temperature

Ukiah Municipal Airport (13.7 miles)

  • Lowest 6 September, 2026

    45.6 °F

  • Average September

    68.6 °F

  • Highest 10 September, 2026

    100.7 °F

Climate (2021–2026)

Ukiah Municipal Airport (13.7 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    60.9 °F

  • Average High 2021–2026

    76 °F
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