San Gabriel River Mouth Weather Forecast

    • 64
    • 68

    Increasing Clouds

    • 63
    • 66

    Patchy Fog

    • 67
    • 67

    Patchy Fog

    • 67
    • 72

    Patchy Fog

    • 67
    • 70

    Patchy Fog

    • 66
    • 70

    Partly Sunny

Today 4 Sep Orange County Coastal

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 75 to 79 at the Beaches to 81 to 86 farther inland and near higher coastal Terrain. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 4 Sep Orange County Coastal

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 62 to 66. Areas of Winds southwest 10 to 15 Mph in the evening becoming light.

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San Gabriel River Mouth Temperature Statistics

September Temperature

Long Beach, Long Beach Airport (5 miles)

  • Lowest 1 September, 2025

    68 °F

  • Average September

    76 °F

  • Highest 2 September, 2025

    90 °F

Climate (2020–Present)

Long Beach, Long Beach Airport (5 miles)

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  • Average Low 2020–2025

    57.2 °F

  • Average 2020–2025

    64.6 °F

  • Average High 2020–2025

    74.4 °F
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