O'Neill Lake Weather Forecast

    • 57
    • 72

    Increasing Clouds

    • 57
    • 73

    Gradual Clearing

    • 57
    • 73

    Mostly Cloudy

    • 57
    • 74

    Mostly Cloudy

    • 59
    • 76

    Mostly Cloudy

    • 60
    • 78

    Mostly Cloudy

    • 59
    • 78

    Mostly Cloudy

Today 31 May San Diego County Inland Valleys

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 72 to 75 in the western Valleys to 77 to 82 near the Foothills. Light Winds becoming west 10 Mph this afternoon.

Tonight 31 May San Diego County Inland Valleys

Partly cloudy this evening. Becoming mostly cloudy. Patchy fog overnight. Lows 47 to 56. Areas of Winds southwest to 10 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

O'Neill Lake Temperature Statistics

May Temperature

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

  • Lowest 6 May, 2024

    45 °F

  • Average May

    63.6 °F

  • Highest 12 May, 2024

    73 °F

Climate (2019–Present)

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

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  • Average Low 2019–2024

    53.8 °F

  • Average 2019–2024

    63.6 °F

  • Average High 2019–2024

    73.8 °F
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