Cardiff Weather Forecast

    • 64
    • 75

    Gradual Clearing

    • 65
    • 76

    Partly Sunny

    • 66
    • 77

    Partly Sunny

    • 68
    • 78

    Partly Sunny

    • 68
    • 79

    Partly Sunny

    • 68
    • 83

    Partly Sunny

Today 21 Sep San Diego County Coastal Areas

Mostly cloudy this morning. Becoming partly cloudy. Highs 74 to 79. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 21 Sep San Diego County Coastal Areas

Partly cloudy in the evening. Becoming mostly cloudy. Lows 59 to 65. Areas of Winds west to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cardiff Temperature Statistics

September Temperature

Carlsbad, McClellan-Palomar Airport (7.5 miles)

  • Lowest 3 September, 2026

    62.7 °F

  • Average September

    75.5 °F

  • Highest 7 September, 2026

    99.6 °F

Climate (2021–2026)

Carlsbad, McClellan-Palomar Airport (7.5 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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