El Capitan Reservoir Weather Forecast

    • 49
    • 73

    Mostly Sunny

    • 46
    • 66

    Slight Chance Rain Showers

    • 42
    • 61

    Partly Sunny

    • 43
    • 65

    Partly Sunny

    • 43
    • 64

    Mostly Cloudy

    • 42
    • 63

    Mostly Cloudy

    • 43
    • 64

    Partly Sunny

Today 13 Dec San Diego County Inland Valleys

Mostly sunny. Patchy dense fog in the morning. Highs 71 to 76. Light Winds.

Tonight 13 Dec San Diego County Inland Valleys

Mostly clear in the evening. Becoming partly cloudy. Lows 45 to 50. Light Winds.

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El Capitan Reservoir Temperature Statistics

December Temperature

San Diego/El Cajon, Gillespie Field Airport (11.8 miles)

  • Lowest 1 December, 2019

    41 °F
  • Average December

    54.4 °F
  • Highest 2 December, 2019

    71.6 °F

Climate (2010–Present)

San Diego/El Cajon, Gillespie Field Airport (11.8 miles)

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  • Average Low 2010–Present

    54.4 °F
  • Average 2010–Present

    62.1 °F
  • Average High 2010–Present

    77.7 °F
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