El Capitan Reservoir Weather Forecast

    • 52
    • 77

    Mostly Sunny

    • 53
    • 77

    Mostly Sunny

    • 54
    • 76

    Mostly Sunny

    • 53
    • 72

    Mostly Sunny

    • 55
    • 77

    Mostly Sunny

    • 59
    • 82

    Mostly Sunny

Today 14 May San Diego County Inland Valleys

Partly cloudy with patchy fog in the morning. Becoming mostly sunny. Highs 73 to 76 in the western Valleys to 74 to 79 near the Foothills. Areas of Winds west to 10 Mph becoming 10 to 15 Mph in the afternoon.

Tonight 14 May San Diego County Inland Valleys

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 50 to 54. Areas of Winds west to 10 Mph in the evening becoming light.

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  • Temperature Real-Time

El Capitan Reservoir Temperature Statistics

May Temperature

Ramona, Ramona Airport (11.8 miles)

  • Lowest 6 May, 2026

    39.9 °F

  • Average May

    61.5 °F

  • Highest 11 May, 2026

    90 °F

Climate (2021–Present)

Ramona, Ramona Airport (11.8 miles)

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  • Average Low 2021–2026

    51.6 °F

  • Average 2021–2026

    64.6 °F

  • Average High 2021–2026

    76.9 °F
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