Spring Valley Weather Forecast

    • 49
    • 76

    Patchy Fog

    • 51
    • 71

    Mostly Cloudy

    • 52
    • 67

    Chance Rain Showers

    • 50
    • 65

    Slight Chance Rain Showers

    • 47
    • 68

    Mostly Sunny

    • 48
    • 71

    Partly Sunny

Today 20 Jan San Diego County Inland Valleys

Mostly sunny. Highs 74 to 79. Areas of Winds east to 10 Mph in the morning becoming light.

Tonight 20 Jan San Diego County Inland Valleys

Mostly clear. Lows 43 to 51 in wind Sheltered Areas to 48 to 54 in warmer Locations. Light Winds.

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Spring Valley Temperature Statistics

January Temperature

Gillespie Field Airport (5.6 miles)

  • Lowest 10 January, 2026

    35.6 °F

  • Average January

    53.3 °F

  • Highest 14 January, 2026

    82.4 °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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