San Quentin Weather Forecast

    • 56
    • 68

    Decreasing Clouds

    • 54
    • 71

    Partly Sunny

    • 54
    • 75

    Partly Sunny

    • 55
    • 72

    Partly Sunny

    • 55
    • 73

    Partly Sunny

    • 55
    • 76

    Mostly Sunny

Today 19 Jun North Bay Interior Valleys

Mostly cloudy in the morning then becoming sunny. Highs in the lower 60s to mid 70s. Southwest Winds 10 to 20 Mph.

Tonight 19 Jun North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the 50s. Southwest Winds 10 to 20 Mph. Becoming west 5 to 10 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

San Quentin Temperature Statistics

June Temperature

Novato / Gnoss Field (14.3 miles)

  • Lowest 7 June, 2026

    46.4 °F

  • Average June

    66 °F

  • Highest 11 June, 2026

    100.4 °F

Climate (2021–2026)

Novato / Gnoss Field (14.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    57.7 °F

  • Average High 2021–2026

    72.5 °F
Get WillyWeather+ to remove ads