Brentwood Weather Forecast

    • 39
    • 59

    Mostly Sunny

    • 40
    • 56

    Partly Sunny

    • 43
    • 60

    Partly Sunny

    • 42
    • 61

    Mostly Sunny

    • 43
    • 60

    Partly Sunny

    • 42
    • 61

    Partly Sunny

    • 44
    • 59

    Partly Sunny

Today 13 Jan East Bay Interior Valleys

Sunny. Highs around 60. Northeast Winds around 5 Mph.

Tonight 13 Jan East Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Patchy dense fog after midnight. Lows around 40. Light Winds.

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Brentwood Temperature Statistics

January Temperature

Livermore, Livermore Municipal Airport (17.4 miles)

  • Lowest 10 January, 2026

    32 °F

  • Average January

    50.5 °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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