Spring Valley Weather Forecast

    • 56
    • 73

    Increasing Clouds

    • 56
    • 73

    Mostly Cloudy

    • 56
    • 73

    Mostly Cloudy

    • 55
    • 72

    Partly Sunny

    • 56
    • 74

    Mostly Sunny

    • 57
    • 77

    Partly Sunny

    • 58
    • 79

    Mostly Sunny

Today 14 May San Diego County Inland Valleys

Mostly sunny. Highs 71 to 75 in the western Valleys to 73 to 78 near the Foothills. Areas of Winds west to 10 Mph becoming 10 to 15 Mph this afternoon.

Tonight 14 May San Diego County Inland Valleys

Partly cloudy this evening. Becoming mostly cloudy. Patchy fog overnight. Lows 51 to 55. Areas of Winds southwest to 10 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Spring Valley Temperature Statistics

May Temperature

Gillespie Field Airport (5.6 miles)

  • Lowest 6 May, 2026

    51.8 °F

  • Average May

    62.2 °F

  • Highest 11 May, 2026

    86 °F

Climate (2021–Present)

Gillespie Field Airport (5.6 miles)

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  • Average Low 2021–2026

    53.4 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    76.2 °F
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