Old Ornbaun Hot Springs Weather Forecast

    • 53
    • 81

    Becoming Sunny

    • 52
    • 79

    Mostly Sunny

    • 56
    • 87

    Sunny

    • 55
    • 89

    Sunny

    • 54
    • 89

    Sunny

    • 53
    • 87

    Mostly Sunny

    • 52
    • 82

    Mostly Sunny

Today 13 Sep Southwestern Mendocino Interior

Mostly cloudy in the morning then clearing. Patchy valley fog in the morning. Highs 72 to 86.

Tonight 13 Sep Southwestern Mendocino Interior

Partly cloudy. Lows 50 to 60.

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Old Ornbaun Hot Springs Temperature Statistics

September Temperature

Ukiah Municipal Airport (15.5 miles)

  • Lowest 7 September, 2025

    50 °F

  • Average September

    69.5 °F

  • Highest 2 September, 2025

    102.9 °F

Climate (2020–Present)

Ukiah Municipal Airport (15.5 miles)

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  • Average Low 2020–2025

    46.8 °F

  • Average 2020–2025

    60.7 °F

  • Average High 2020–2025

    76.3 °F
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