Brentwood Weather Forecast

    • 58
    • 81

    Partly Sunny

    • 59
    • 77

    Partly Sunny

    • 60
    • 80

    Sunny

    • 60
    • 81

    Mostly Sunny

    • 59
    • 79

    Partly Sunny

    • 56
    • 76

    Partly Sunny

Today 1 Feb San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy. Highs 78 to 83. Light Winds becoming southwest to 10 Mph in the afternoon.

Tonight 1 Feb San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy in the evening. Becoming mostly clear. Lows 45 to 49 in wind Sheltered Areas to 49 to 56 in warmer Locations. Light Winds.

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Brentwood Temperature Statistics

February Temperature

Ontario International Airport (8.1 miles)

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Climate (2021–Present)

Ontario International Airport (8.1 miles)

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  • Average Low 2021–2026

    55.6 °F

  • Average 2021–2026

    66.7 °F

  • Average High 2021–2026

    79 °F
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