San Francisco Bay - Richmond San Rafael Bridge Weather Forecast

    • 58
    • 64

    Increasing Clouds

    • 59
    • 63

    Partly Sunny

    • 57
    • 66

    Mostly Sunny

    • 57
    • 71

    Mostly Sunny

    • 57
    • 72

    Mostly Sunny

    • 58
    • 69

    Partly Sunny

Today 15 Sep North Bay Interior Valleys

Sunny. Patchy fog in the morning. Highs in the lower 70s to mid 80s. South Winds 5 to 15 Mph.

Tonight 15 Sep North Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the 40s to upper 50s. South Winds 10 to 15 Mph.

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San Francisco Bay - Richmond San Rafael Bridge Temperature Statistics

September Temperature

Novato / Gnoss Field (14.9 miles)

  • Lowest 6 September, 2026

    48.2 °F

  • Average September

    67.8 °F

  • Highest 9 September, 2026

    100.4 °F

Climate (2021–2026)

Novato / Gnoss Field (14.9 miles)

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  • Average Low 2021–2026

    47 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    72.5 °F
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