San Francisco Bay - Rodeo Marina Weather Forecast

    • 56
    • 62

    Chance Rain

    • 55
    • 65

    Mostly Sunny

    • 55
    • 66

    Mostly Sunny

    • 56
    • 66

    Mostly Sunny

    • 58
    • 73

    Mostly Sunny

    • 60
    • 73

    Partly Sunny

    • 62
    • 72

    Partly Sunny

Today 3 Sep East Bay Interior Valleys

Partly cloudy. A slight chance of rain. Highs in the upper 70s. West Winds 15 to 20 Mph.

Tonight 3 Sep East Bay Interior Valleys

Mostly cloudy in the evening then becoming partly cloudy. A slight chance of rain in the evening. Lows in the upper 50s. West Winds 10 to 20 Mph. Becoming southwest up to 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Francisco Bay - Rodeo Marina Temperature Statistics

September Temperature

Napa, Napa County Airport (11.2 miles)

  • Lowest 1 September, 2026

    59 °F

  • Average September

    63.9 °F

  • Highest 1 September, 2026

    72 °F

Climate (2021–2026)

Napa, Napa County Airport (11.2 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.5 °F

  • Average High 2021–2026

    70.3 °F
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