Jamul Weather Forecast

    • 62
    • 80

    Dense Fog

    • 61
    • 79

    Mostly Cloudy

    • 62
    • 81

    Mostly Sunny

    • 63
    • 83

    Mostly Sunny

    • 63
    • 85

    Mostly Sunny

    • 64
    • 86

    Mostly Sunny

Today 13 Aug San Diego County Inland Valleys

Mostly cloudy. Highs 78 to 83. Areas of Winds southwest to 10 Mph.

Tonight 13 Aug San Diego County Inland Valleys

Mostly cloudy. Patchy fog overnight. Lows 59 to 64. Areas of Winds west to 10 Mph in the evening becoming light.

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Jamul Temperature Statistics

August Temperature

Gillespie Field Airport (9.3 miles)

  • Lowest 3 August, 2026

    66.2 °F

  • Average August

    74.3 °F

  • Highest 2 August, 2026

    93.2 °F

Climate (2021–2026)

Gillespie Field Airport (9.3 miles)

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  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    76.2 °F
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