Jamul Weather Forecast

    • 60
    • 83

    Mostly Sunny

    • 58
    • 80

    Mostly Cloudy

    • 57
    • 76

    Rain Showers Likely

    • 53
    • 68

    Chance Rain Showers

    • 53
    • 70

    Mostly Sunny

Today 19 Oct San Diego County Inland Valleys

Sunny. Highs 83 to 87 in the western Valleys to 79 to 84 near the Foothills. Light Winds becoming west 10 Mph this afternoon.

Tonight 19 Oct San Diego County Inland Valleys

Clear in the evening. Becoming partly cloudy overnight with patchy fog. Local visibility one quarter mile or less at Times overnight. Lows 57 to 61. 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

    73.1 °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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