Lucas Valley-Marinwood Weather Forecast

    • 51
    • 73

    Increasing Clouds

    • 49
    • 70

    Partly Sunny

    • 53
    • 79

    Sunny

    • 55
    • 88

    Sunny

    • 55
    • 86

    Sunny

    • 54
    • 80

    Mostly Sunny

Today 26 Sep North Bay Interior Valleys

Mostly cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. Highs in the mid 60s to upper 70s. South Winds 5 to 10 Mph.

Tonight 26 Sep North Bay Interior Valleys

Mostly cloudy. Patchy fog after midnight. Lows in the upper 40s to mid 50s. Southwest Winds 5 to 10 Mph.

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Lucas Valley-Marinwood Temperature Statistics

September Temperature

Novato / Gnoss Field (7.5 miles)

  • Lowest 6 September, 2026

    48.2 °F

  • Average September

    65.7 °F

  • Highest 9 September, 2026

    100.4 °F

Climate (2021–2026)

Novato / Gnoss Field (7.5 miles)

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  • Average Low 2021–2026

    47 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    72.4 °F
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