Brentwood Weather Forecast

    • 35
    • 51

    Increasing Clouds

    • 36
    • 51

    Mostly Cloudy

    • 37
    • 53

    Partly Sunny

    • 39
    • 54

    Partly Sunny

    • 41
    • 57

    Partly Sunny

    • 42
    • 59

    Partly Sunny

Today 9 Jan East Bay Interior Valleys

Partly cloudy late in the morning then becoming sunny. Highs in the lower 50s. Northeast Winds 5 to 10 Mph.

Tonight 9 Jan East Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Areas of frost after midnight. Lows in the mid 30s. Northeast Winds around 5 Mph.

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  • Temperature Real-Time

Brentwood Temperature Statistics

January Temperature

Livermore, Livermore Municipal Airport (17.4 miles)

  • Lowest 7 January, 2026

    43 °F

  • Average January

    53.5 °F

  • Highest 1 January, 2026

    62.1 °F

Climate (2021–Present)

Livermore, Livermore Municipal Airport (17.4 miles)

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  • Average Low 2021–2026

    48.9 °F

  • Average 2021–2026

    60.6 °F

  • Average High 2021–2026

    73.9 °F
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