El Cajon City Park Weather Forecast

    • 59
    • 75

    Slight Chance Rain Showers

    • 56
    • 72

    Slight Chance Rain Showers

    • 58
    • 73

    Rain Showers

    • 54
    • 70

    Rain Showers Likely

    • 54
    • 74

    Mostly Sunny

    • 55
    • 77

    Mostly Sunny

    • 54
    • 76

    Partly Sunny

Today 29 Oct San Diego County Inland Valleys

Partly cloudy in the morning. Becoming mostly sunny. Highs 73 to 76 in the western Valleys to 66 to 71 near the Foothills.

Tonight 29 Oct San Diego County Inland Valleys

Cloudy. A chance of Showers overnight. Lows 53 to 59. Light Winds. Chance of measurable precipitation 30 percent.

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El Cajon City Park Temperature Statistics

October Temperature

Gillespie Field Airport (1.9 miles)

  • Lowest 14 October, 2026

    50 °F

  • Average October

    70 °F

  • Highest 3 October, 2026

    105.8 °F

Climate (2021–2026)

Gillespie Field Airport (1.9 miles)

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  • Average Low 2021–2026

    53.7 °F

  • Average 2021–2026

    60.8 °F

  • Average High 2021–2026

    76.5 °F
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