San Pablo Bay - The Sisters Weather Forecast

    • 49
    • 59

    Mostly Cloudy

    • 48
    • 59

    Partly Sunny

    • 49
    • 60

    Partly Sunny

    • 50
    • 61

    Mostly Sunny

    • 50
    • 63

    Mostly Sunny

    • 51
    • 62

    Partly Sunny

Today 31 Jan North Bay Interior Valleys

Mostly cloudy. Patchy dense fog in the morning. Highs in the 50s to upper 60s. East Winds 5 to 10 Mph.

Tonight 31 Jan North Bay Interior Valleys

Mostly cloudy. Patchy fog after midnight. Lows in the 40s to lower 50s. Northeast Winds 10 to 15 Mph in the evening. Becoming light.

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San Pablo Bay - The Sisters Temperature Statistics

January Temperature

Novato / Gnoss Field (11.8 miles)

  • Lowest 12 January, 2026

    33.8 °F

  • Average January

    50.4 °F

  • Highest 24 January, 2026

    71.6 °F

Climate (2021–Present)

Novato / Gnoss Field (11.8 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    72.3 °F
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