El Capitan Reservoir Weather Forecast

    • 53
    • 66

    Increasing Clouds

    • 52
    • 69

    Partly Sunny

    • 54
    • 79

    Mostly Sunny

    • 58
    • 83

    Mostly Sunny

    • 57
    • 84

    Mostly Sunny

    • 57
    • 85

    Mostly Sunny

Today 28 May San Diego County Inland Valleys

Partly cloudy. Patchy drizzle in the morning. Patchy fog in the morning. Highs 66 to 69 in the western Valleys to 61 to 66 near the Foothills. Areas of Winds west to 10 Mph becoming 10 to 15 Mph with Gusts to 25 Mph in the afternoon.

Tonight 28 May San Diego County Inland Valleys

Partly cloudy in the evening. Becoming cloudy overnight with patchy fog. Lows 50 to 56 in wind Sheltered Areas to 46 to 54 in warmer Locations. Areas of Winds west 10 to 15 Mph. Becoming to 10 Mph overnight.

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  • Temperature Forecast NOAA

  • 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

    62.6 °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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