San Pablo Bay - Petaluma River Entrance Weather Forecast

    • 55
    • 79

    Increasing Clouds

    • 56
    • 77

    Mostly Cloudy

    • 56
    • 72

    Mostly Cloudy

    • 55
    • 74

    Partly Sunny

    • 55
    • 76

    Partly Sunny

    • 55
    • 75

    Partly Sunny

Today 11 Aug North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the lower 70s to mid 80s. South Winds 5 to 15 Mph.

Tonight 11 Aug North Bay Interior Valleys

Mostly clear in the evening then becoming mostly cloudy. Patchy fog in the evening. Areas of fog after midnight. Lows in the 40s to upper 50s. Southwest Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Pablo Bay - Petaluma River Entrance Temperature Statistics

August Temperature

Novato / Gnoss Field (3.7 miles)

  • Lowest 1 August, 2026

    53.6 °F

  • Average August

    67 °F

  • Highest 2 August, 2026

    98.6 °F

Climate (2021–2026)

Novato / Gnoss Field (3.7 miles)

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  • Average Low 2021–2026

    46.9 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    72.5 °F
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