Jamul Weather Forecast

    • 55
    • 78

    Mostly Sunny

    • 54
    • 80

    Mostly Sunny

    • 53
    • 77

    Mostly Sunny

    • 54
    • 76

    Mostly Sunny

    • 53
    • 75

    Mostly Sunny

    • 53
    • 72

    Partly Sunny

    • 52
    • 67

    Mostly Sunny

Today 20 May San Diego County Inland Valleys

Mostly sunny. Highs 80 to 85. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 20 May San Diego County Inland Valleys

Clear this evening. Becoming partly cloudy. Patchy fog overnight. Lows 53 to 57. Areas of Winds west to 10 Mph this evening becoming light.

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  • Temperature Forecast NOAA

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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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