San Pablo Bay - The Sisters Weather Forecast

    • 46
    • 65

    Decreasing Clouds

    • 53
    • 54

    Mostly Cloudy

    • 56
    • 58

    Rain

    • 50
    • 58

    Chance Rain

    • 54
    • 54

    Rain Likely

    • 51
    • 55

    Rain

Today 14 Dec North Bay Interior Valleys

Partly cloudy. Patchy dense fog in the morning. Highs in the mid 40s to upper 50s. Southeast Winds 5 to 10 Mph.

Tonight 14 Dec North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog in the evening. Areas of fog after midnight. Lows in the 30s to upper 40s. West Winds 5 to 10 Mph.

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San Pablo Bay - The Sisters Temperature Statistics

December Temperature

Novato / Gnoss Field (11.8 miles)

  • Lowest 2 December, 2025

    37.4 °F

  • Average December

    46 °F

  • Highest 3 December, 2025

    71.6 °F

Climate (2020–Present)

Novato / Gnoss Field (11.8 miles)

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  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    57.4 °F

  • Average High 2020–2025

    72.3 °F
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