San Ramon Weather Forecast

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    Rain

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    Rain

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    Rain

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    Rain

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    Rain

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    Rain Likely

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    Chance Rain

Today 31 Dec East Bay Interior Valleys

Rain likely. Highs in the lower 50s. Northeast Winds 5 to 10 Mph.

Tonight 31 Dec East Bay Interior Valleys

Rain. Lows in the upper 40s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Ramon Temperature Statistics

December Temperature

Livermore, Livermore Municipal Airport (10.6 miles)

  • Lowest 14 December, 2025

    34 °F

  • Average December

    48.6 °F

  • Highest 24 December, 2025

    66.9 °F

Climate (2021–Present)

Livermore, Livermore Municipal Airport (10.6 miles)

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  • Average Low 2021–2025

    48.9 °F

  • Average 2021–2025

    60.6 °F

  • Average High 2021–2025

    73.9 °F
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