El Cajon City Park Weather Forecast

    • 68
    • 98

    Hot

    • 67
    • 91

    Mostly Sunny

    • 65
    • 88

    Mostly Sunny

    • 65
    • 89

    Partly Sunny

    • 68
    • 90

    Partly Sunny

    • 68
    • 92

    Partly Sunny

Today 29 Aug San Diego County Inland Valleys

Mostly sunny. Highs 94 to 99. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 29 Aug San Diego County Inland Valleys

Mostly clear. Patchy fog overnight. Lows 65 to 69. Areas of Winds west to 10 Mph in the evening becoming light.

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  • Temperature Real-Time

El Cajon City Park Temperature Statistics

August Temperature

Gillespie Field Airport (1.9 miles)

  • Lowest 3 August, 2026

    66.2 °F

  • Average August

    75 °F

  • Highest 23 August, 2026

    100.4 °F

Climate (2021–2026)

Gillespie Field Airport (1.9 miles)

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  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    60.6 °F

  • Average High 2021–2026

    76.3 °F
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