Jamul Weather Forecast

    • 57
    • 80

    Mostly Sunny

    • 55
    • 79

    Mostly Sunny

    • 55
    • 77

    Partly Sunny

    • 56
    • 76

    Mostly Cloudy

    • 57
    • 73

    Mostly Cloudy

Today 25 Oct San Diego County Inland Valleys

Mostly sunny. Highs 80 to 83 in the western Valleys to 75 to 80 near the Foothills. Light Winds becoming west 10 to 15 Mph this afternoon.

Tonight 25 Oct San Diego County Inland Valleys

Partly cloudy. Lows 54 to 59. Areas of Winds north to 10 Mph in the evening becoming light.

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Jamul Temperature Statistics

October Temperature

Gillespie Field Airport (9.3 miles)

  • Lowest 14 October, 2026

    50 °F

  • Average October

    71.3 °F

  • Highest 3 October, 2026

    105.8 °F

Climate (2021–2026)

Gillespie Field Airport (9.3 miles)

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  • Average Low 2021–2026

    53.7 °F

  • Average 2021–2026

    60.8 °F

  • Average High 2021–2026

    76.5 °F
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