El Cajon City Park Weather Forecast

    • 64
    • 83

    Mostly Cloudy

    • 65
    • 84

    Patchy Fog

    • 65
    • 86

    Partly Sunny

    • 66
    • 87

    Mostly Sunny

    • 67
    • 90

    Mostly Sunny

    • 67
    • 90

    Mostly Sunny

Today 14 Aug San Diego County Inland Valleys

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 79 to 82 in the western Valleys to 81 to 86 near the Foothills. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph this afternoon.

Tonight 14 Aug San Diego County Inland Valleys

Partly cloudy. Patchy dense fog in the evening. Patchy fog overnight. Lows 57 to 62. Areas of Winds west to 10 Mph in the evening becoming light.

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El Cajon City Park Temperature Statistics

August Temperature

Gillespie Field Airport (1.9 miles)

  • Lowest 3 August, 2026

    66.2 °F

  • Average August

    74.3 °F

  • Highest 2 August, 2026

    93.2 °F

Climate (2021–2026)

Gillespie Field Airport (1.9 miles)

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  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    76.2 °F
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