Saint Marys Bay Weather Forecast

    • 60
    • 90

    Sunny

    • 67
    • 95

    Partly Sunny

    • 73
    • 100

    Hot

    • 67
    • 100

    Hot

    • 61
    • 93

    Mostly Sunny

    • 60
    • 88

    Mostly Sunny

Today 7 Sep East Bay Interior Valleys

Sunny. Highs near 90. Northwest Winds 5 to 10 Mph.

Tonight 7 Sep East Bay Interior Valleys

Mostly clear. Lows in the mid 50s. Light Winds.

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Saint Marys Bay Temperature Statistics

September Temperature

Livermore, Livermore Municipal Airport (19.9 miles)

  • Lowest 5 September, 2026

    51.1 °F

  • Average September

    66.3 °F

  • Highest 5 September, 2026

    80.1 °F

Climate (2021–2026)

Livermore, Livermore Municipal Airport (19.9 miles)

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  • Average Low 2021–2026

    49 °F

  • Average 2021–2026

    61 °F

  • Average High 2021–2026

    74.1 °F
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