Saint Marys Bay Weather Forecast

    • 48
    • 72

    Mostly Sunny

    • 46
    • 74

    Sunny

    • 47
    • 76

    Mostly Sunny

    • 45
    • 74

    Mostly Sunny

    • 45
    • 71

    Partly Sunny

    • 46
    • 71

    Partly Sunny

Today 23 Oct East Bay Interior Valleys

Mostly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs near 70. North Winds 5 to 15 Mph.

Tonight 23 Oct East Bay Interior Valleys

Clear. Lows in the upper 40s. Northwest Winds 5 to 15 Mph.

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Saint Marys Bay Temperature Statistics

October Temperature

Livermore, Livermore Municipal Airport (19.9 miles)

  • Lowest 11 October, 2026

    45.6 °F

  • Average October

    70.8 °F

  • Highest 6 October, 2026

    102.7 °F

Climate (2021–2026)

Livermore, Livermore Municipal Airport (19.9 miles)

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  • Average Low 2021–2026

    49.1 °F

  • Average 2021–2026

    61.1 °F

  • Average High 2021–2026

    74.2 °F
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