Jamul Weather Forecast

    • 58
    • 78

    Decreasing Clouds

    • 62
    • 79

    Mostly Sunny

    • 64
    • 84

    Mostly Sunny

    • 67
    • 90

    Sunny

    • 70
    • 94

    Sunny

    • 70
    • 93

    Sunny

Today 28 Sep San Diego County Inland Valleys

Partly cloudy this morning. Becoming sunny. Highs 78 to 83. Areas of Winds southwest to 10 Mph becoming west this afternoon.

Tonight 28 Sep San Diego County Inland Valleys

Mostly clear. Cooler. Lows 52 to 59. Areas of Winds west to 10 Mph in the evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Jamul Temperature Statistics

September Temperature

Gillespie Field Airport (9.3 miles)

  • Lowest 3 September, 2026

    57.2 °F

  • Average September

    75.7 °F

  • Highest 9 September, 2026

    107.6 °F

Climate (2021–2026)

Gillespie Field Airport (9.3 miles)

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

  • Average Low 2021–2026

    53.6 °F

  • Average 2021–2026

    60.7 °F

  • Average High 2021–2026

    76.3 °F
Get WillyWeather+ to remove ads