South Lake Weather Forecast

    • 60
    • 73

    Patchy Fog

    • 60
    • 76

    Partly Sunny

    • 64
    • 80

    Mostly Sunny

    • 65
    • 83

    Patchy Fog

    • 66
    • 82

    Slight Chance Thunderstorms

    • 66
    • 82

    Slight Chance Thunderstorms

    • 65
    • 80

    Slight Chance Thunderstorms

Today 13 Sep San Diego County Inland Valleys

Partly cloudy with patchy fog this morning. Becoming sunny. Highs 76 to 79 in the western Valleys to 78 to 83 near the Foothills. Light Winds becoming west 10 Mph this afternoon.

Tonight 13 Sep San Diego County Inland Valleys

Mostly clear this evening. Becoming partly cloudy. Patchy fog overnight. Lows 55 to 61. Light Winds.

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South Lake Temperature Statistics

September Temperature

Carlsbad, McClellan-Palomar Airport (6.2 miles)

  • Lowest 6 September, 2025

    64 °F

  • Average September

    70.3 °F

  • Highest 7 September, 2025

    79 °F

Climate (2020–Present)

Carlsbad, McClellan-Palomar Airport (6.2 miles)

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  • Average Low 2020–2025

    56.5 °F

  • Average 2020–2025

    62.5 °F

  • Average High 2020–2025

    68.9 °F
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