Mervin Morris Park Weather Forecast

    • 60
    • 83

    Mostly Sunny

    • 60
    • 81

    Partly Sunny

    • 56
    • 73

    Partly Sunny

    • 56
    • 74

    Partly Sunny

    • 56
    • 69

    Partly Sunny

    • 57
    • 76

    Mostly Sunny

Today 23 Sep San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the upper 70s to mid 80s. Light Winds. Becoming northwest 10 to 20 Mph in the afternoon.

Tonight 23 Sep San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s. West Winds 10 to 15 Mph. Becoming southwest up to 5 Mph after midnight.

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Mervin Morris Park Temperature Statistics

September Temperature

Hayward, Hayward Air Terminal (1.2 miles)

  • Lowest 7 September, 2026

    55.7 °F

  • Average September

    67.6 °F

  • Highest 9 September, 2026

    99.6 °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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