Spring Valley Weather Forecast

    • 65
    • 85

    Mostly Sunny

    • 64
    • 84

    Mostly Sunny

    • 65
    • 83

    Mostly Sunny

    • 61
    • 82

    Mostly Sunny

    • 64
    • 82

    Partly Sunny

    • 69
    • 85

    Partly Sunny

Today 31 Aug San Diego County Inland Valleys

Mostly sunny. Highs 85 to 90. Areas of Winds southwest to 10 Mph becoming west with Gusts to 25 Mph this afternoon.

Tonight 31 Aug San Diego County Inland Valleys

Mostly clear. Patchy fog overnight. Lows 59 to 64. Areas of Winds west to 10 Mph in the evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Spring Valley Temperature Statistics

August Temperature

Gillespie Field Airport (5.6 miles)

  • Lowest 3 August, 2026

    66.2 °F

  • Average August

    75.4 °F

  • Highest 23 August, 2026

    100.4 °F

Climate (2021–2026)

Gillespie Field Airport (5.6 miles)

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

  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    60.6 °F

  • Average High 2021–2026

    76.3 °F
Get WillyWeather+ to remove ads