Rumsey Bay Weather Forecast

    • 58
    • 89

    Chance Rain Showers

    • 57
    • 80

    Decreasing Clouds

    • 57
    • 86

    Mostly Sunny

    • 60
    • 87

    Sunny

    • 62
    • 96

    Mostly Sunny

    • 58
    • 87

    Chance Rain

    • 56
    • 83

    Mostly Sunny

Today 18 Sep Southern Lake County

Mostly cloudy. Slight chance of rain in the afternoon. Highs 83 to 94.

Tonight 18 Sep Southern Lake County

Mostly cloudy. Slight chance of rain Showers in the evening. Isolated Thunderstorms through the night. Chance of rain Showers overnight. Lows 56 to 66.

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Rumsey Bay Temperature Statistics

September Temperature

Ukiah Municipal Airport (16.2 miles)

  • Lowest 7 September, 2025

    50 °F

  • Average September

    69.9 °F

  • Highest 2 September, 2025

    102.9 °F

Climate (2020–Present)

Ukiah Municipal Airport (16.2 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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