Jamul Weather Forecast

    • 54
    • 78

    Partly Sunny

    • 55
    • 81

    Mostly Sunny

    • 54
    • 79

    Mostly Sunny

    • 53
    • 76

    Mostly Sunny

    • 53
    • 75

    Mostly Sunny

Today 19 May San Diego County Inland Valleys

Mostly sunny. Warmer. Highs 77 to 82. Areas of Winds west 10 to 15 Mph. Gusts to 30 Mph. Becoming 25 Mph this afternoon.

Tonight 19 May San Diego County Inland Valleys

Partly cloudy. Lows 53 to 57. Areas of Winds west to 10 Mph this evening becoming light.

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Jamul Temperature Statistics

May Temperature

Gillespie Field Airport (9.3 miles)

  • Lowest 6 May, 2026

    51.8 °F

  • Average May

    62.5 °F

  • Highest 11 May, 2026

    86 °F

Climate (2021–Present)

Gillespie Field Airport (9.3 miles)

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  • Average Low 2021–2026

    53.4 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    76.2 °F
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