Spring Valley Weather Forecast

    • 69
    • 90

    Increasing Clouds

    • 69
    • 83

    Chance Thunderstorms

    • 67
    • 83

    Chance Thunderstorms

    • 65
    • 80

    Slight Chance Thunderstorms

    • 65
    • 81

    Patchy Fog

    • 66
    • 83

    Patchy Fog

Today 16 Sep San Diego County Inland Valleys

Mostly sunny. Highs 91 to 96. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 16 Sep San Diego County Inland Valleys

Partly cloudy. Lows 66 to 71. Areas of Winds northwest to 10 Mph in the evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Spring Valley Temperature Statistics

September Temperature

Gillespie Field Airport (5.6 miles)

  • Lowest 6 September, 2025

    62.6 °F

  • Average September

    71.6 °F

  • Highest 7 September, 2025

    95 °F

Climate (2020–Present)

Gillespie Field Airport (5.6 miles)

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

  • Average Low 2020–2025

    52.9 °F

  • Average 2020–2025

    60.2 °F

  • Average High 2020–2025

    76 °F
Get WillyWeather+ to remove ads