Spring Valley Weather Forecast

    • 49
    • 64

    Chance Rain Showers

    • 50
    • 65

    Mostly Cloudy

    • 48
    • 64

    Partly Sunny

    • 47
    • 67

    Mostly Sunny

    • 47
    • 69

    Mostly Sunny

    • 49
    • 71

    Mostly Sunny

Today 5 Jan San Diego County Inland Valleys

Cloudy with a chance of Showers and a slight chance of Thunderstorms in the Morning, then mostly cloudy with a slight chance of Showers in the afternoon. Patchy fog. Highs around 64 in the western Valleys to 56 to 61 near the Foothills. Areas of Winds south to 10 Mph. Chance of measurable precipitation 50 percent.

Tonight 5 Jan San Diego County Inland Valleys

Mostly cloudy with a slight chance of Showers. Patchy fog. Lows 42 to 49 in wind Sheltered Areas to 46 to 50 in warmer Locations. Light Winds. Chance of measurable precipitation 20 percent.

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Spring Valley Temperature Statistics

January Temperature

Gillespie Field Airport (5.6 miles)

  • Lowest 1 January, 2026

    59 °F

  • Average January

    61.5 °F

  • Highest 2 January, 2026

    71.6 °F

Climate (2021–Present)

Gillespie Field Airport (5.6 miles)

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  • Average Low 2021–2026

    53.2 °F

  • Average 2021–2026

    60.2 °F

  • Average High 2021–2026

    75.8 °F
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