Spring Valley Weather Forecast

    • 53
    • 72

    Increasing Clouds

    • 58
    • 76

    Mostly Cloudy

    • 55
    • 70

    Rain Showers

    • 56
    • 68

    Rain Showers

    • 54
    • 68

    Rain Showers Likely

    • 51
    • 66

    Chance Rain Showers

Today 29 Dec San Diego County Inland Valleys

Mostly sunny. Highs around 73 in the western Valleys to 63 to 68 near the Foothills. Areas of Winds east 15 to 25 Mph with Gusts to 45 Mph.

Tonight 29 Dec San Diego County Inland Valleys

Mostly clear in the evening. Becoming partly cloudy. Lows 44 to 51 in wind Sheltered Areas to 49 to 53 in warmer Locations. Areas of Winds east 15 to 25 Mph with Gusts to 40 Mph.

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Spring Valley Temperature Statistics

December Temperature

Gillespie Field Airport (5.6 miles)

  • Lowest 5 December, 2025

    39.2 °F

  • Average December

    54.7 °F

  • Highest 10 December, 2025

    86 °F

Climate (2020–Present)

Gillespie Field Airport (5.6 miles)

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  • Average Low 2020–2025

    53.1 °F

  • Average 2020–2025

    60.2 °F

  • Average High 2020–2025

    75.8 °F
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