San Quentin Weather Forecast

    • 55
    • 80

    Becoming Sunny

    • 57
    • 78

    Mostly Sunny

    • 57
    • 83

    Mostly Sunny

    • 58
    • 84

    Mostly Sunny

    • 57
    • 85

    Mostly Sunny

    • 57
    • 79

    Partly Sunny

Today 26 Sep North Bay Interior Valleys

Sunny. Highs in the lower 70s to mid 80s. Southwest Winds 10 to 20 Mph.

Tonight 26 Sep North Bay Interior Valleys

Mostly clear in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the lower to mid 50s. Southwest Winds 10 to 20 Mph.

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San Quentin Temperature Statistics

September Temperature

Novato / Gnoss Field (14.3 miles)

  • Lowest 17 September, 2022

    44.6 °F
  • Average September

    67.8 °F
  • Highest 5 September, 2022

    111.2 °F

Climate (2010–Present)

Novato / Gnoss Field (14.3 miles)

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  • Average Low 2010–Present

    46.2 °F
  • Average 2010–Present

    58.4 °F
  • Average High 2010–Present

    73.6 °F
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