Petaluma River - San Antonio Creek Entrance Weather Forecast

    • 47
    • 71

    Increasing Clouds

    • 48
    • 66

    Mostly Cloudy

    • 47
    • 64

    Mostly Cloudy

    • 44
    • 66

    Mostly Sunny

    • 46
    • 68

    Partly Sunny

    • 48
    • 70

    Partly Sunny

Today 23 Apr North Bay Interior Valleys

Sunny. Patchy fog in the morning. Highs in the 60s to mid 70s. West Winds 5 to 10 Mph.

Tonight 23 Apr North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Areas of fog after midnight. Lows in the 40s to lower 50s. West Winds 5 to 10 Mph.

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Petaluma River - San Antonio Creek Entrance Temperature Statistics

April Temperature

Novato / Gnoss Field (1.2 miles)

  • Lowest 3 April, 2026

    42.8 °F

  • Average April

    58.5 °F

  • Highest 5 April, 2026

    86 °F

Climate (2021–Present)

Novato / Gnoss Field (1.2 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    57.7 °F

  • Average High 2021–2026

    72.6 °F
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