Jamul Weather Forecast

    • 68
    • 88

    Breezy

    • 62
    • 85

    Mostly Sunny

    • 62
    • 84

    Sunny

    • 59
    • 81

    Mostly Sunny

    • 56
    • 71

    Chance Rain Showers

    • 54
    • 67

    Chance Rain Showers

Today 16 Oct San Diego County Inland Valleys

Mostly sunny. Highs 91 to 96 in the western Valleys to 80 to 85 near the Foothills. Areas of Winds east 35 to 45 Mph with Gusts to 65 Mph.

Tonight 16 Oct San Diego County Inland Valleys

Mostly clear in the evening. Becoming partly cloudy. Lows 63 to 71. Areas of Winds east 25 to 35 Mph. Gusts to 55 Mph. Becoming 50 Mph overnight.

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Jamul Temperature Statistics

October Temperature

Gillespie Field Airport (9.3 miles)

  • Lowest 14 October, 2026

    50 °F

  • Average October

    72.9 °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

    60.7 °F

  • Average High 2021–2026

    76.5 °F
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