Jamul Weather Forecast

    • 70
    • 95

    Sunny

    • 72
    • 97

    Hot

    • 73
    • 100

    Hot

    • 72
    • 101

    Hot

    • 69
    • 95

    Mostly Sunny

    • 65
    • 90

    Mostly Sunny

    • 64
    • 86

    Mostly Sunny

Today 25 Aug San Diego County Inland Valleys

Mostly sunny. Highs 93 to 98 in the western Valleys to 97 to 102 near the Foothills. Areas of Winds west to 10 Mph becoming 10 to 15 Mph this afternoon.

Tonight 25 Aug San Diego County Inland Valleys

Mostly clear. Lows 68 to 75. Areas of Winds west to 10 Mph this 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

    74.4 °F

  • Highest 23 August, 2026

    100.4 °F

Climate (2021–2026)

Gillespie Field Airport (9.3 miles)

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  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    60.6 °F

  • Average High 2021–2026

    76.3 °F
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