South Lake Weather Forecast

    • 61
    • 76

    Increasing Clouds

    • 61
    • 79

    Mostly Sunny

    • 64
    • 80

    Mostly Sunny

    • 66
    • 82

    Partly Sunny

    • 65
    • 85

    Partly Sunny

    • 62
    • 80

    Partly Sunny

Today 22 Sep San Diego County Inland Valleys

Mostly sunny. Warmer. Highs 80 to 85. Light Winds becoming west 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 22 Sep San Diego County Inland Valleys

Mostly clear in the evening. Becoming partly cloudy. Lows 56 to 62. Areas of Winds west to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Lake Temperature Statistics

September Temperature

Carlsbad, McClellan-Palomar Airport (6.2 miles)

  • Lowest 3 September, 2026

    62.7 °F

  • Average September

    75.3 °F

  • Highest 7 September, 2026

    99.6 °F

Climate (2021–2026)

Carlsbad, McClellan-Palomar Airport (6.2 miles)

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  • Average Low 2021–2026

    57.2 °F

  • Average 2021–2026

    63.2 °F

  • Average High 2021–2026

    69.5 °F
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