Hayward Regional Shoreline Weather Forecast

    • 61
    • 79

    Increasing Clouds

    • 59
    • 75

    Increasing Clouds

    • 58
    • 70

    Partly Sunny

    • 57
    • 73

    Mostly Sunny

    • 58
    • 71

    Partly Sunny

    • 59
    • 68

    Mostly Cloudy

    • 58
    • 68

    Partly Sunny

Today 10 Sep San Francisco Bay Shoreline

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

Tonight 10 Sep San Francisco Bay Shoreline

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

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Hayward Regional Shoreline Temperature Statistics

September Temperature

Hayward, Hayward Air Terminal (1.2 miles)

  • Lowest 7 September, 2026

    55.7 °F

  • Average September

    67.8 °F

  • Highest 8 September, 2026

    87.1 °F

Climate (2021–2026)

Hayward, Hayward Air Terminal (1.2 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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