San Rafael Airport Weather Forecast

    • 55
    • 85

    Increasing Clouds

    • 55
    • 77

    Mostly Cloudy

    • 56
    • 77

    Partly Sunny

    • 55
    • 79

    Mostly Sunny

    • 59
    • 90

    Mostly Sunny

    • 58
    • 91

    Mostly Sunny

Today 19 Sep North Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the mid 70s to upper 80s. Southwest Winds 5 to 15 Mph.

Tonight 19 Sep North Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the 50s to lower 60s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Rafael Airport Temperature Statistics

September Temperature

Novato / Gnoss Field (8.7 miles)

  • Lowest 6 September, 2026

    48.2 °F

  • Average September

    66.8 °F

  • Highest 9 September, 2026

    100.4 °F

Climate (2021–2026)

Novato / Gnoss Field (8.7 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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