Hayward Weather Forecast

    • 59
    • 68

    Mostly Cloudy

    • 58
    • 72

    Increasing Clouds

    • 58
    • 76

    Partly Sunny

    • 58
    • 78

    Partly Sunny

    • 59
    • 72

    Mostly Cloudy

    • 59
    • 77

    Partly Sunny

    • 60
    • 83

    Mostly Sunny

Today 16 Sep San Francisco Bay Shoreline

Sunny. Highs in the 70s to mid 80s.

Tonight 16 Sep San Francisco Bay Shoreline

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 50s. West Winds 10 to 20 Mph. Becoming southwest 5 to 10 Mph after midnight.

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Hayward Temperature Statistics

September Temperature

Hayward, Hayward Air Terminal (1.9 miles)

  • Lowest 7 September, 2026

    55.7 °F

  • Average September

    69 °F

  • Highest 9 September, 2026

    99.6 °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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