Tomales Bay Entrance Weather Forecast

    • 54
    • 63

    Mostly Cloudy

    • 55
    • 64

    Partly Sunny

    • 56
    • 61

    Mostly Cloudy

    • 56
    • 61

    Mostly Cloudy

    • 56
    • 61

    Partly Sunny

    • 57
    • 63

    Partly Sunny

Today 16 Sep Coastal North Bay Including Point Reyes National Seashore

Sunny. Patchy fog in the morning. Highs in the 60s to upper 70s. South Winds around 5 Mph. Becoming west in the afternoon.

Tonight 16 Sep Coastal North Bay Including Point Reyes National Seashore

Partly cloudy. Lows in the mid 50s. West Winds around 5 Mph in the evening. Becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tomales Bay Entrance Temperature Statistics

September Temperature

Petaluma Municipal Airport (19.9 miles)

  • Lowest 14 September, 2025

    48.2 °F

  • Average September

    62.6 °F

  • Highest 1 September, 2025

    93.2 °F

Climate (2020–Present)

Petaluma Municipal Airport (19.9 miles)

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  • Average Low 2020–2025

    44.4 °F

  • Average 2020–2025

    55.2 °F

  • Average High 2020–2025

    69.1 °F
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