San Francisco Bay - Steinberger Slough Entrance Weather Forecast

    • 55
    • 71

    Increasing Clouds

    • 54
    • 69

    Partly Sunny

    • 55
    • 76

    Mostly Sunny

    • 58
    • 82

    Sunny

    • 58
    • 78

    Mostly Sunny

    • 58
    • 75

    Mostly Sunny

Today 26 Sep San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the upper 60s to mid 70s. Southwest Winds 5 to 10 Mph becoming west 10 to 20 Mph in the afternoon.

Tonight 26 Sep San Francisco Bay Shoreline

Mostly cloudy. Lows in the mid 50s. West Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Francisco Bay - Steinberger Slough Entrance Temperature Statistics

September Temperature

San Carlos Airport (1.9 miles)

  • Lowest 7 September, 2026

    53.6 °F

  • Average September

    64.4 °F

  • Highest 9 September, 2026

    98.6 °F

Climate (2021–2026)

San Carlos Airport (1.9 miles)

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  • Average Low 2021–2026

    51.8 °F

  • Average 2021–2026

    57 °F

  • Average High 2021–2026

    68.3 °F
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