Jamul Weather Forecast

    • 49
    • 65

    Increasing Clouds

    • 47
    • 62

    Rain Showers

    • 42
    • 58

    Partly Sunny

    • 44
    • 64

    Mostly Sunny

    • 49
    • 66

    Partly Sunny

    • 50
    • 70

    Mostly Cloudy

Today 25 Dec San Diego County Inland Valleys

Partly cloudy this morning. Becoming mostly sunny. A slight chance of Showers. Highs 66 to 69 in the western Valleys to 60 to 65 near the Foothills. Areas of Winds south 10 to 15 Mph with Gusts to 25 Mph. Chance of measurable precipitation 20 percent.

Tonight 25 Dec San Diego County Inland Valleys

Partly cloudy with a chance of Showers in the Evening, then mostly cloudy with a slight chance of Showers overnight. Lows 43 to 51 in wind Sheltered Areas to 47 to 53 in warmer Locations. Areas of Winds south 10 Mph. Chance of measurable precipitation 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Jamul Temperature Statistics

December Temperature

Gillespie Field Airport (9.3 miles)

  • Lowest 5 December, 2025

    39.2 °F

  • Average December

    54.2 °F

  • Highest 10 December, 2025

    86 °F

Climate (2020–Present)

Gillespie Field Airport (9.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    53.1 °F

  • Average 2020–2025

    60.2 °F

  • Average High 2020–2025

    75.8 °F
Get WillyWeather+ to remove ads