El Cajon City Park Weather Forecast

    • 55
    • 78

    Mostly Cloudy

    • 54
    • 74

    Mostly Cloudy

    • 53
    • 71

    Mostly Cloudy

    • 53
    • 67

    Mostly Cloudy

    • 53
    • 70

    Partly Sunny

    • 54
    • 74

    Mostly Sunny

Today 24 May San Diego County Inland Valleys

Mostly cloudy with patchy fog in the morning. Becoming partly cloudy. Highs 74 to 79. Areas of Winds west to 10 Mph becoming 10 to 15 Mph in the afternoon.

Tonight 24 May San Diego County Inland Valleys

Partly cloudy in the evening. Becoming cloudy overnight with patchy fog. Lows 50 to 54. Areas of Winds west 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • 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

    62.7 °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

    76.3 °F
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