Jamul Weather Forecast

    • 55
    • 73

    Increasing Clouds

    • 57
    • 72

    Mostly Cloudy

    • 55
    • 69

    Mostly Cloudy

    • 56
    • 70

    Rain Showers Likely

    • 54
    • 67

    Chance Rain Showers

    • 55
    • 72

    Mostly Sunny

Today 28 Oct San Diego County Inland Valleys

Partly cloudy. Highs 74 to 77 in the western Valleys to 70 to 75 near the Foothills. Light Winds becoming west 10 Mph this afternoon.

Tonight 28 Oct San Diego County Inland Valleys

Partly cloudy. Lows 51 to 56. Light Winds.

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Jamul Temperature Statistics

October Temperature

Gillespie Field Airport (9.3 miles)

  • Lowest 14 October, 2026

    50 °F

  • Average October

    70.3 °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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