El Capitan Reservoir Weather Forecast

    • 56
    • 87

    Sunny

    • 62
    • 87

    Mostly Sunny

    • 69
    • 90

    Chance Rain Showers

    • 67
    • 89

    Chance Rain Showers

    • 66
    • 90

    Mostly Sunny

    • 66
    • 91

    Mostly Sunny

Today 3 Sep San Diego County Inland Valleys

Sunny. Highs 81 to 86. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 3 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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  • Temperature Forecast NOAA

  • Temperature Real-Time

El Capitan Reservoir Temperature Statistics

September Temperature

Ramona, Ramona Airport (11.8 miles)

  • Lowest 1 September, 2026

    54 °F

  • Average September

    69.9 °F

  • Highest 1 September, 2026

    88 °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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