O'Neill Lake Weather Forecast

    • 61
    • 88

    Mostly Sunny

    • 63
    • 88

    Mostly Sunny

    • 60
    • 90

    Sunny

    • 59
    • 84

    Mostly Sunny

    • 59
    • 81

    Partly Sunny

    • 57
    • 79

    Chance Rain Showers

Today 9 Nov San Diego County Inland Valleys

Sunny. Highs 85 to 89 in the western Valleys to 79 to 84 near the Foothills. Areas of Winds east 10 to 15 Mph becoming west this afternoon. Gusts to 25 Mph.

Tonight 9 Nov San Diego County Inland Valleys

Mostly clear. Lows 56 to 61. Areas of Winds east 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

O'Neill Lake Temperature Statistics

November Temperature

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

  • Lowest 2 November, 2026

    48 °F

  • Average November

    68.1 °F

  • Highest 7 November, 2026

    86 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    54.4 °F

  • Average 2021–2026

    64.3 °F

  • Average High 2021–2026

    74.1 °F
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