El Cajon City Park Weather Forecast

    • 74
    • 103

    Hot

    • 73
    • 102

    Hot

    • 70
    • 101

    Hot

    • 70
    • 100

    Hot

    • 69
    • 96

    Mostly Sunny

    • 66
    • 91

    Partly Sunny

    • 63
    • 84

    Partly Sunny

Today 5 Oct San Diego County Inland Valleys

Mostly sunny. Hot. Highs 101 to 104 in the western Valleys to 93 to 98 near the Foothills. Areas of Winds east 10 to 15 Mph becoming west this afternoon. Gusts to 25 Mph.

Tonight 5 Oct San Diego County Inland Valleys

Mostly clear. Lows 68 to 73. Areas of Winds northeast to 10 Mph this evening becoming light.

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El Cajon City Park Temperature Statistics

October Temperature

Gillespie Field Airport (1.9 miles)

  • Lowest 1 October, 2026

    60.8 °F

  • Average October

    76.8 °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

    53.6 °F

  • Average 2021–2026

    60.7 °F

  • Average High 2021–2026

    76.4 °F
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