Spring Valley Weather Forecast

    • 66
    • 85

    Increasing Clouds

    • 66
    • 83

    Partly Sunny

    • 64
    • 79

    Mostly Cloudy

    • 64
    • 80

    Partly Sunny

    • 64
    • 80

    Partly Sunny

    • 65
    • 82

    Partly Sunny

Today 11 Aug San Diego County Inland Valleys

Mostly sunny. Highs 84 to 88 in the western Valleys to 87 to 92 near the Foothills. Light Winds becoming west 10 Mph this afternoon.

Tonight 11 Aug San Diego County Inland Valleys

Mostly clear in the evening. Becoming partly cloudy. Lows 62 to 66. Areas of Winds west to 10 Mph in the evening becoming light.

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Spring Valley Temperature Statistics

August Temperature

Gillespie Field Airport (5.6 miles)

  • Lowest 3 August, 2026

    66.2 °F

  • Average August

    74.1 °F

  • Highest 2 August, 2026

    93.2 °F

Climate (2021–2026)

Gillespie Field Airport (5.6 miles)

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  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    76.2 °F
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