El Cajon Mountain Weather Forecast

    • 51
    • 76

    Increasing Clouds

    • 49
    • 63

    Partly Sunny

    • 54
    • 68

    Mostly Sunny

    • 54
    • 75

    Mostly Sunny

    • 52
    • 70

    Partly Sunny

    • 52
    • 67

    Partly Sunny

Today 21 Oct San Diego County Inland Valleys

Patchy fog this morning. Partly cloudy. Local visibility one quarter mile or less at Times this morning. Highs 76 to 81 in the western Valleys to 81 to 86 near the Foothills. Light Winds becoming west 10 Mph this afternoon.

Tonight 21 Oct San Diego County Inland Valleys

Partly cloudy. Patchy fog overnight. Lows 50 to 56. Light Winds.

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El Cajon Mountain Temperature Statistics

October Temperature

Ramona, Ramona Airport (9.9 miles)

  • Lowest 4 October, 2025

    44.1 °F

  • Average October

    64.9 °F

  • Highest 10 October, 2025

    89.1 °F

Climate (2020–Present)

Ramona, Ramona Airport (9.9 miles)

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  • Average Low 2020–2025

    51.1 °F

  • Average 2020–2025

    63.9 °F

  • Average High 2020–2025

    76.4 °F
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