San Francisco Bay - San Mateo Bridge (East End) Weather Forecast

    • 61
    • 67

    Mostly Cloudy

    • 57
    • 64

    Partly Sunny

    • 57
    • 64

    Partly Sunny

    • 56
    • 61

    Mostly Sunny

    • 58
    • 64

    Mostly Sunny

    • 59
    • 67

    Mostly Sunny

    • 60
    • 69

    Mostly Sunny

Today 24 Sep San Francisco Bay Shoreline

Partly cloudy. Highs in the upper 70s to mid 80s. West Winds 10 to 20 Mph.

Tonight 24 Sep San Francisco Bay Shoreline

Mostly cloudy in the evening then becoming partly cloudy. Lows around 60. West Winds 10 to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Francisco Bay - San Mateo Bridge (East End) Temperature Statistics

September Temperature

Hayward, Hayward Air Terminal (5 miles)

  • Lowest 7 September, 2026

    55.7 °F

  • Average September

    67.4 °F

  • Highest 9 September, 2026

    99.6 °F

Climate (2021–2026)

Hayward, Hayward Air Terminal (5 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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