Jamul Weather Forecast

    • 53
    • 68

    Becoming Sunny

    • 58
    • 77

    Sunny

    • 63
    • 83

    Sunny

    • 67
    • 86

    Breezy

    • 63
    • 84

    Sunny

    • 62
    • 86

    Mostly Sunny

Today 13 Oct San Diego County Inland Valleys

Mostly sunny. Highs 70 to 73 in the western Valleys to 64 to 69 near the Foothills. Areas of Winds east to 10 Mph becoming northwest 10 Mph this afternoon.

Tonight 13 Oct San Diego County Inland Valleys

Clear. Lows 47 to 54. Areas of Winds north 10 Mph.

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Jamul Temperature Statistics

October Temperature

Gillespie Field Airport (9.3 miles)

  • Lowest 1 October, 2026

    60.8 °F

  • Average October

    75.9 °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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