San Dieguito County Park Weather Forecast

    • 67
    • 80

    Mostly Cloudy

    • 62
    • 76

    Partly Sunny

    • 67
    • 79

    Mostly Sunny

    • 67
    • 85

    Mostly Sunny

    • 69
    • 84

    Mostly Sunny

    • 72
    • 86

    Mostly Sunny

    • 72
    • 89

    Mostly Sunny

Today 27 Sep San Diego County Coastal Areas

Mostly sunny. Highs 84 to 89 near the coast to 92 to 95 inland.

Tonight 27 Sep San Diego County Coastal Areas

Mostly cloudy. A slight chance of Showers this evening. Lows 64 to 69. Light Winds. Chance of measurable precipitation 20 percent.

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San Dieguito County Park Temperature Statistics

September Temperature

Carlsbad, McClellan-Palomar Airport (9.3 miles)

  • Lowest 3 September, 2026

    62.7 °F

  • Average September

    74.5 °F

  • Highest 7 September, 2026

    99.6 °F

Climate (2021–2026)

Carlsbad, McClellan-Palomar Airport (9.3 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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