Cardiff Weather Forecast

    • 66
    • 74

    Partly Sunny

    • 67
    • 77

    Patchy Fog

    • 67
    • 77

    Slight Chance Thunderstorms

    • 68
    • 77

    Slight Chance Thunderstorms

    • 68
    • 76

    Slight Chance Thunderstorms

    • 67
    • 76

    Slight Chance Thunderstorms

Today 15 Sep San Diego County Coastal Areas

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 72 to 77 near the coast to 79 to 84 inland. Light Winds becoming west 10 Mph this afternoon.

Tonight 15 Sep San Diego County Coastal Areas

Mostly clear in the evening. Becoming partly cloudy overnight with patchy fog. Lows 63 to 67. Light Winds.

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Cardiff Temperature Statistics

September Temperature

Carlsbad, McClellan-Palomar Airport (7.5 miles)

  • Lowest 6 September, 2025

    64 °F

  • Average September

    69.9 °F

  • Highest 7 September, 2025

    79 °F

Climate (2020–Present)

Carlsbad, McClellan-Palomar Airport (7.5 miles)

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  • Average Low 2020–2025

    56.6 °F

  • Average 2020–2025

    62.5 °F

  • Average High 2020–2025

    68.9 °F
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