El Capitan Reservoir Weather Forecast

    • 55
    • 83

    Mostly Sunny

    • 56
    • 85

    Sunny

    • 59
    • 89

    Mostly Sunny

    • 58
    • 88

    Partly Sunny

    • 56
    • 85

    Mostly Sunny

    • 57
    • 87

    Mostly Sunny

Today 17 Sep San Diego County Inland Valleys

Partly cloudy this morning. Becoming mostly sunny. Highs 76 to 80 in the western Valleys to 78 to 83 near the Foothills. Light Winds becoming west 10 to 15 Mph this afternoon.

Tonight 17 Sep San Diego County Inland Valleys

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 53 to 59. Areas of Winds west to 10 Mph in the evening becoming light.

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El Capitan Reservoir Temperature Statistics

September Temperature

Ramona, Ramona Airport (11.8 miles)

  • Lowest 3 September, 2026

    50 °F

  • Average September

    75.7 °F

  • Highest 9 September, 2026

    104 °F

Climate (2021–2026)

Ramona, Ramona Airport (11.8 miles)

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  • Average Low 2021–2026

    51.7 °F

  • Average 2021–2026

    64.7 °F

  • Average High 2021–2026

    76.9 °F
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