San Joaquin Marsh Weather Forecast

    • 58
    • 75

    Mostly Sunny

    • 61
    • 85

    Mostly Sunny

    • 62
    • 90

    Mostly Sunny

    • 59
    • 82

    Patchy Fog

    • 59
    • 78

    Patchy Fog

    • 60
    • 80

    Partly Sunny

    • 60
    • 81

    Patchy Fog

Today 27 Oct Orange County Coastal

Partly cloudy this morning. Becoming mostly sunny. Highs around 70 at the Beaches to 72 to 75 farther inland and near higher coastal Terrain. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 27 Oct Orange County Coastal

Mostly clear. Lows around 59. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Joaquin Marsh Temperature Statistics

October Temperature

John Wayne-Orange County Airport (1.2 miles)

  • Lowest 16 October, 2025

    54 °F

  • Average October

    66.5 °F

  • Highest 18 October, 2025

    84 °F

Climate (2020–Present)

John Wayne-Orange County Airport (1.2 miles)

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  • Average Low 2020–2025

    58.6 °F

  • Average 2020–2025

    65.6 °F

  • Average High 2020–2025

    73.4 °F
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