Spring Valley Weather Forecast

    • 71
    • 96

    Mostly Sunny

    • 75
    • 98

    Hot

    • 76
    • 101

    Hot

    • 74
    • 102

    Hot

    • 70
    • 94

    Mostly Sunny

    • 67
    • 88

    Mostly Sunny

Today 25 Aug San Diego County Inland Valleys

Mostly sunny. Highs 93 to 98 in the western Valleys to 97 to 102 near the Foothills. Areas of Winds west to 10 Mph becoming 10 to 15 Mph this afternoon.

Tonight 25 Aug San Diego County Inland Valleys

Mostly clear. Lows 69 to 74. 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

    74.4 °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