Brentwood Weather Forecast

    • 41
    • 48

    Dense Fog

    • 41
    • 50

    Decreasing Clouds

    • 41
    • 52

    Partly Sunny

    • 42
    • 57

    Partly Sunny

    • 43
    • 58

    Mostly Cloudy

    • 50
    • 58

    Chance Rain Showers

    • 51
    • 62

    Chance Rain Showers

Today 10 Dec East Bay Interior Valleys

Sunny. Highs near 50. Northeast Winds 5 to 10 Mph.

Tonight 10 Dec East Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Patchy fog in the evening. Widespread dense fog after midnight. Lows in the lower 40s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Brentwood Temperature Statistics

December Temperature

Livermore, Livermore Municipal Airport (17.4 miles)

  • Lowest 5 December, 2025

    36 °F

  • Average December

    44.6 °F

  • Highest 2 December, 2025

    63 °F

Climate (2020–Present)

Livermore, Livermore Municipal Airport (17.4 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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