Brentwood Weather Forecast

    • 39
    • 62

    Dense Fog

    • 43
    • 57

    Mostly Cloudy

    • 42
    • 62

    Partly Sunny

    • 41
    • 60

    Partly Sunny

    • 41
    • 61

    Partly Sunny

    • 44
    • 60

    Mostly Cloudy

    • 45
    • 60

    Partly Sunny

Today 16 Jan East Bay Interior Valleys

Sunny. Patchy fog late in the morning. Highs in the lower to mid 60s. Northeast Winds 5 to 10 Mph with Gusts to around 25 Mph.

Tonight 16 Jan East Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Patchy fog in the Evening, then Areas of fog after midnight. Lows in the lower 40s. Light Winds. Becoming northeast around 5 Mph after midnight.

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Brentwood Temperature Statistics

January Temperature

Livermore, Livermore Municipal Airport (17.4 miles)

  • Lowest 10 January, 2026

    32 °F

  • Average January

    49.5 °F

  • Highest 13 January, 2026

    64 °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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