San Francisco Bay - Sulphur Creek Entrance Weather Forecast

    • 61
    • 70

    Gradual Clearing

    • 62
    • 72

    Partly Sunny

    • 63
    • 74

    Partly Sunny

    • 63
    • 72

    Mostly Cloudy

    • 61
    • 71

    Mostly Cloudy

    • 61
    • 71

    Mostly Cloudy

Today 5 Sep San Francisco Bay Shoreline

Mostly cloudy in the morning then becoming partly cloudy. 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 cloudy. Lows in the lower 60s. West Winds 5 to 10 Mph.

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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 1 September, 2025

    60.1 °F

  • Average September

    68 °F

  • Highest 1 September, 2025

    82.9 °F

Climate (2020–Present)

Hayward, Hayward Air Terminal (1.9 miles)

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  • Average Low 2020–2025

    52 °F

  • Average 2020–2025

    59.3 °F

  • Average High 2020–2025

    69.1 °F
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