Cull Canyon Regional Recreation Area Weather Forecast

    • 57
    • 71

    Increasing Clouds

    • 56
    • 77

    Partly Sunny

    • 57
    • 81

    Partly Sunny

    • 57
    • 72

    Mostly Cloudy

    • 57
    • 75

    Partly Sunny

    • 57
    • 79

    Partly Sunny

Today 17 Sep San Francisco Bay Shoreline

Mostly cloudy in the morning then becoming sunny. Highs in the lower to mid 70s. South Winds up to 5 Mph. Becoming west 5 to 15 Mph in the afternoon.

Tonight 17 Sep San Francisco Bay Shoreline

Mostly clear in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the upper 50s. West Winds 10 to 15 Mph decreasing to up to 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cull Canyon Regional Recreation Area Temperature Statistics

September Temperature

Hayward, Hayward Air Terminal (5.6 miles)

  • Lowest 7 September, 2026

    55.7 °F

  • Average September

    68.6 °F

  • Highest 9 September, 2026

    99.6 °F

Climate (2021–2026)

Hayward, Hayward Air Terminal (5.6 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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