Jamul Weather Forecast

    • 67
    • 90

    Mostly Sunny

    • 66
    • 89

    Mostly Sunny

    • 66
    • 89

    Mostly Sunny

    • 67
    • 89

    Mostly Sunny

    • 67
    • 90

    Mostly Sunny

    • 67
    • 89

    Mostly Sunny

Today 19 Aug San Diego County Inland Valleys

Partly cloudy this morning. Becoming mostly sunny. Highs 87 to 92 in the western Valleys to 95 to 100 near the Foothills. Areas of Winds west to 10 Mph.

Tonight 19 Aug San Diego County Inland Valleys

Mostly clear this evening. Becoming partly cloudy. Patchy fog overnight. Lows 66 to 71. Light Winds.

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Jamul Temperature Statistics

August Temperature

Gillespie Field Airport (9.3 miles)

  • Lowest 3 August, 2026

    66.2 °F

  • Average August

    73.8 °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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