O'Neill Lake Weather Forecast

    • 53
    • 71

    Increasing Clouds

    • 53
    • 70

    Partly Sunny

    • 52
    • 71

    Mostly Cloudy

    • 50
    • 69

    Mostly Cloudy

    • 50
    • 63

    Chance Rain Showers

    • 50
    • 63

    Partly Sunny

    • 50
    • 69

    Mostly Sunny

Today 30 Apr San Diego County Inland Valleys

Patchy fog this morning. Partly cloudy. Highs 72 to 77. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph this afternoon.

Tonight 30 Apr San Diego County Inland Valleys

Partly cloudy. Patchy fog overnight. Lows 44 to 52. Areas of Winds west to 10 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

O'Neill Lake Temperature Statistics

April Temperature

Oceanside, Camp Pendleton, Marine Corps Air Station (2.5 miles)

  • Lowest 4 April, 2025

    39 °F

  • Average April

    58.6 °F

  • Highest 6 April, 2025

    78.1 °F

Climate (2020–Present)

Oceanside, Camp Pendleton, Marine Corps Air Station (2.5 miles)

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  • Average Low 2020–2025

    54 °F

  • Average 2020–2025

    64 °F

  • Average High 2020–2025

    74.2 °F
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