El Cajon City Park Weather Forecast

    • 67
    • 87

    Increasing Clouds

    • 67
    • 87

    Mostly Sunny

    • 67
    • 89

    Patchy Fog

    • 68
    • 90

    Mostly Sunny

    • 68
    • 89

    Partly Sunny

    • 70
    • 91

    Partly Sunny

    • 70
    • 92

    Partly Sunny

Today 17 Jul San Diego County Inland Valleys

Patchy fog this morning. Partly cloudy. Highs 81 to 86 in the western Valleys to 85 to 90 near the Foothills. Areas of Winds west to 10 Mph becoming southwest this afternoon.

Tonight 17 Jul San Diego County Inland Valleys

Mostly clear this evening. Becoming partly cloudy. Lows 61 to 66. Areas of Winds southwest to 10 Mph this evening becoming light.

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El Cajon City Park Temperature Statistics

July Temperature

Gillespie Field Airport (1.9 miles)

  • Lowest 2 July, 2026

    60.8 °F

  • Average July

    69.8 °F

  • Highest 15 July, 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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