Cull Canyon Lake Weather Forecast

    • 55
    • 73

    Becoming Sunny

    • 54
    • 74

    Mostly Sunny

    • 56
    • 80

    Partly Sunny

    • 56
    • 77

    Partly Sunny

    • 57
    • 78

    Partly Sunny

    • 57
    • 78

    Partly Sunny

Today 12 Sep San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Breezy. Highs in the 70s. West Winds 10 to 20 Mph increasing to 20 to 30 Mph in the afternoon.

Tonight 12 Sep San Francisco Bay Shoreline

Partly cloudy. Lows in the upper 50s. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cull Canyon Lake Temperature Statistics

September Temperature

Hayward, Hayward Air Terminal (4.3 miles)

  • Lowest 7 September, 2026

    55.7 °F

  • Average September

    69.4 °F

  • Highest 9 September, 2026

    97 °F

Climate (2021–2026)

Hayward, Hayward Air Terminal (4.3 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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