El Cajon City Park Weather Forecast

    • 64
    • 87

    Becoming Sunny

    • 62
    • 86

    Mostly Sunny

    • 63
    • 85

    Mostly Sunny

    • 64
    • 85

    Partly Sunny

    • 69
    • 87

    Chance Rain Showers

    • 69
    • 90

    Chance Rain Showers

Today 1 Sep San Diego County Inland Valleys

Mostly sunny. Highs 81 to 86 in the western Valleys to 84 to 89 near the Foothills. Areas of Winds west to 10 Mph becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 1 Sep San Diego County Inland Valleys

Mostly clear. Lows 58 to 63. Areas of Winds west to 10 Mph in the evening becoming light.

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El Cajon City Park Temperature Statistics

September Temperature

Gillespie Field Airport (1.9 miles)

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  • Average September

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Climate (2021–2026)

Gillespie Field Airport (1.9 miles)

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  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    60.6 °F

  • Average High 2021–2026

    76.3 °F
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