San Ramon Weather Forecast

    • 41
    • 61

    Mostly Sunny

    • 42
    • 63

    Mostly Sunny

    • 44
    • 65

    Mostly Sunny

    • 42
    • 65

    Mostly Sunny

    • 42
    • 63

    Mostly Sunny

    • 44
    • 63

    Partly Sunny

Today 8 Dec East Bay Interior Valleys

Partly cloudy in the morning then becoming sunny. Areas of dense fog in the morning. Highs in the upper 40s. Light Winds. Becoming northeast around 5 Mph in the afternoon.

Tonight 8 Dec East Bay Interior Valleys

Mostly cloudy. Areas of fog. Lows around 40. Light Winds.

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San Ramon Temperature Statistics

December Temperature

Livermore, Livermore Municipal Airport (10.6 miles)

  • Lowest 5 December, 2025

    36 °F

  • Average December

    45.4 °F

  • Highest 2 December, 2025

    63 °F

Climate (2020–Present)

Livermore, Livermore Municipal Airport (10.6 miles)

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  • Average Low 2020–2025

    48.8 °F

  • Average 2020–2025

    60.6 °F

  • Average High 2020–2025

    73.9 °F
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