Castro Valley Weather Forecast

    • 48
    • 73

    Mostly Sunny

    • 47
    • 67

    Mostly Sunny

    • 46
    • 71

    Mostly Sunny

    • 47
    • 71

    Mostly Sunny

    • 48
    • 71

    Mostly Sunny

    • 49
    • 76

    Mostly Sunny

Today 12 Apr San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the upper 60s to mid 70s. Light Winds. Becoming northwest 10 to 20 Mph in the afternoon.

Tonight 12 Apr San Francisco Bay Shoreline

Mostly clear. Lows in the upper 40s. West Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Castro Valley Temperature Statistics

April Temperature

Hayward, Hayward Air Terminal (3.1 miles)

  • Lowest 2 April, 2021

    48.9 °F
  • Average April

    54.4 °F
  • Highest 1 April, 2021

    82 °F

Climate (2010–Present)

Hayward, Hayward Air Terminal (3.1 miles)

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  • Average Low 2010–Present

    51.8 °F
  • Average 2010–Present

    58.9 °F
  • Average High 2010–Present

    68.2 °F
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