Don Castro Reservoir Weather Forecast

    • 43
    • 54

    Mostly Cloudy

    • 39
    • 61

    Becoming Sunny

    • 40
    • 58

    Mostly Sunny

    • 39
    • 61

    Mostly Sunny

    • 40
    • 62

    Mostly Sunny

    • 42
    • 63

    Mostly Sunny

    • 42
    • 65

    Mostly Sunny

Today 17 Jan San Francisco Bay Shoreline

Partly cloudy. Highs in the upper 50s. Southwest Winds around 5 Mph. Becoming west in the afternoon.

Tonight 17 Jan San Francisco Bay Shoreline

Mostly cloudy. Lows in the mid 40s. West Winds up to 5 Mph in the evening. Becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Don Castro Reservoir Temperature Statistics

January Temperature

Hayward, Hayward Air Terminal (3.7 miles)

  • Lowest 15 January, 2025

    41 °F

  • Average January

    54.4 °F

  • Highest 11 January, 2025

    71.1 °F

Climate (2020–Present)

Hayward, Hayward Air Terminal (3.7 miles)

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  • Average Low 2020–2025

    52.1 °F

  • Average 2020–2025

    59.3 °F

  • Average High 2020–2025

    69.1 °F
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