Portuguese Beach Weather Forecast

    • 54
    • 60

    Mostly Cloudy

    • 55
    • 60

    Mostly Cloudy

    • 56
    • 60

    Chance Rain

    • 55
    • 60

    Chance Rain Showers

    • 54
    • 59

    Slight Chance Rain Showers

    • 54
    • 59

    Partly Sunny

    • 55
    • 60

    Partly Sunny

Today 6 Sep Coastal North Bay Including Point Reyes National Seashore

Partly cloudy. Highs in the mid to upper 60s. West Winds around 10 Mph.

Tonight 6 Sep Coastal North Bay Including Point Reyes National Seashore

Partly cloudy. Patchy fog after midnight. Lows in the mid 50s. West Winds 5 to 10 Mph.

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  • Temperature Real-Time

Portuguese Beach Temperature Statistics

September Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (16.2 miles)

  • Lowest 1 September, 2025

    51.1 °F

  • Average September

    66.9 °F

  • Highest 1 September, 2025

    99 °F

Climate (2020–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (16.2 miles)

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  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    72.9 °F
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