Jamul Weather Forecast

    • 52
    • 73

    Increasing Clouds

    • 52
    • 74

    Mostly Sunny

    • 53
    • 74

    Patchy Fog

    • 54
    • 76

    Partly Sunny

    • 53
    • 69

    Partly Sunny

    • 54
    • 74

    Mostly Sunny

    • 56
    • 79

    Mostly Sunny

Today 13 May San Diego County Inland Valleys

Patchy fog this morning. Partly cloudy with patchy drizzle this Morning, then mostly sunny this afternoon. Warmer. Highs 72 to 75 in the western Valleys to 73 to 78 near the Foothills. Light Winds becoming west 10 to 15 Mph this afternoon.

Tonight 13 May San Diego County Inland Valleys

Partly cloudy this evening. Becoming mostly cloudy. Patchy fog overnight. Lows 48 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

    62.2 °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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