San Francisco Bay - Sulphur Creek Entrance Weather Forecast

    • 57
    • 70

    Becoming Sunny

    • 56
    • 70

    Partly Sunny

    • 61
    • 77

    Mostly Sunny

    • 63
    • 79

    Partly Sunny

    • 66
    • 82

    Mostly Cloudy

    • 64
    • 80

    Partly Sunny

Today 5 Sep San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the lower to mid 70s. West Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 5 Sep San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s. West Winds 10 to 20 Mph. Becoming 5 to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Francisco Bay - Sulphur Creek Entrance Temperature Statistics

September Temperature

Hayward, Hayward Air Terminal (1.9 miles)

  • Lowest 2 September, 2026

    58.6 °F

  • Average September

    66 °F

  • Highest 2 September, 2026

    73.7 °F

Climate (2021–2026)

Hayward, Hayward Air Terminal (1.9 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    59.8 °F

  • Average High 2021–2026

    69.2 °F
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