El Cajon City Park Weather Forecast

    • 53
    • 74

    Partly Sunny

    • 55
    • 80

    Patchy Fog

    • 55
    • 77

    Mostly Sunny

    • 55
    • 81

    Mostly Sunny

    • 55
    • 79

    Partly Sunny

    • 55
    • 79

    Mostly Sunny

Today 18 May San Diego County Inland Valleys

Patchy fog in the morning. Partly cloudy. Highs 73 to 78. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph in the afternoon.

Tonight 18 May San Diego County Inland Valleys

Partly cloudy. Lows 49 to 53. 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

May Temperature

Gillespie Field Airport (1.9 miles)

  • Lowest 6 May, 2026

    51.8 °F

  • Average May

    62.5 °F

  • Highest 11 May, 2026

    86 °F

Climate (2021–Present)

Gillespie Field Airport (1.9 miles)

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  • Average Low 2021–2026

    53.4 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    76.2 °F
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