Jamul Weather Forecast

    • 52
    • 72

    Partly Sunny

    • 53
    • 78

    Partly Sunny

    • 54
    • 79

    Mostly Sunny

    • 53
    • 77

    Mostly Sunny

    • 53
    • 74

    Mostly Sunny

    • 54
    • 74

    Mostly Sunny

Today 18 May San Diego County Inland Valleys

Partly cloudy. Warmer. Highs 72 to 77. Areas of Winds south to 10 Mph becoming west this afternoon.

Tonight 18 May San Diego County Inland Valleys

Partly cloudy. Lows 49 to 53. 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

    62.6 °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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