Saint Marys Bay Weather Forecast

    • 59
    • 92

    Becoming Sunny

    • 61
    • 93

    Sunny

    • 64
    • 98

    Hot

    • 63
    • 90

    Mostly Sunny

    • 60
    • 88

    Mostly Sunny

    • 59
    • 89

    Sunny

    • 59
    • 91

    Sunny

Today 13 Aug East Bay Interior Valleys

Sunny. Highs in the 80s. West Winds 15 to 20 Mph.

Tonight 13 Aug East Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s. West Winds 10 to 20 Mph.

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Saint Marys Bay Temperature Statistics

August Temperature

Livermore, Livermore Municipal Airport (19.9 miles)

  • Lowest 4 August, 2025

    55.7 °F

  • Average August

    73.6 °F

  • Highest 8 August, 2025

    100.7 °F

Climate (2020–Present)

Livermore, Livermore Municipal Airport (19.9 miles)

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  • Average Low 2020–2025

    48.7 °F

  • Average 2020–2025

    60.7 °F

  • Average High 2020–2025

    74.3 °F
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