Bay-O-Vista Weather Forecast

    • 45
    • 67

    Partly Cloudy

    • 49
    • 64

    Mostly Cloudy

    • 49
    • 63

    Mostly Cloudy

    • 47
    • 64

    Partly Sunny

    • 44
    • 64

    Mostly Sunny

    • 46
    • 64

    Partly Sunny

    • 45
    • 64

    Mostly Cloudy

Today 19 Jan San Francisco Bay Shoreline

Partly cloudy late in the morning then becoming sunny. Highs in the mid 60s. North Winds around 5 Mph.

Tonight 19 Jan San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the lower to mid 40s. North Winds up to 5 Mph.

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  • Temperature Real-Time

Bay-O-Vista Temperature Statistics

January Temperature

Hayward, Hayward Air Terminal (4.3 miles)

  • Lowest 10 January, 2026

    35.1 °F

  • Average January

    52.6 °F

  • Highest 16 January, 2026

    69.1 °F

Climate (2021–Present)

Hayward, Hayward Air Terminal (4.3 miles)

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  • Average Low 2021–2026

    52.1 °F

  • Average 2021–2026

    59.2 °F

  • Average High 2021–2026

    68.8 °F
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