El Capitan Reservoir Weather Forecast

    • 65
    • 93

    Sunny

    • 58
    • 90

    Sunny

    • 56
    • 83

    Partly Sunny

    • 54
    • 78

    Partly Sunny

    • 54
    • 78

    Mostly Sunny

    • 57
    • 81

    Mostly Sunny

    • 59
    • 85

    Mostly Sunny

Today 7 Sep San Diego County Inland Valleys

Mostly sunny. Highs 88 to 93. Areas of Winds west to 10 Mph.

Tonight 7 Sep San Diego County Inland Valleys

Mostly clear. Lows 62 to 66. Light Winds.

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El Capitan Reservoir Temperature Statistics

September Temperature

Ramona, Ramona Airport (11.8 miles)

  • Lowest 5 September, 2025

    57.9 °F

  • Average September

    80.8 °F

  • Highest 2 September, 2025

    97 °F

Climate (2020–Present)

Ramona, Ramona Airport (11.8 miles)

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  • Average Low 2020–2025

    51.2 °F

  • Average 2020–2025

    64.2 °F

  • Average High 2020–2025

    76.6 °F
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