Jamul Weather Forecast

    • 56
    • 80

    Mostly Sunny

    • 57
    • 86

    Mostly Sunny

    • 56
    • 76

    Patchy Fog

    • 53
    • 77

    Mostly Sunny

    • 53
    • 73

    Mostly Sunny

    • 53
    • 73

    Mostly Sunny

    • 55
    • 78

    Mostly Sunny

Today 10 May San Diego County Inland Valleys

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 75 to 79 in the western Valleys to 83 to 88 near the Foothills. Areas of Winds west to 10 Mph.

Tonight 10 May San Diego County Inland Valleys

Partly cloudy. Lows 51 to 57 in wind Sheltered Areas to 53 to 61 in warmer Locations. Areas of Winds west to 10 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jamul Temperature Statistics

May Temperature

Gillespie Field Airport (9.3 miles)

  • Lowest 6 May, 2026

    51.8 °F

  • Average May

    61.6 °F

  • Highest 8 May, 2026

    80.6 °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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