San Dieguito Reservoir Weather Forecast

    • 72
    • 90

    Increasing Clouds

    • 72
    • 89

    Mostly Sunny

    • 72
    • 90

    Partly Sunny

    • 70
    • 87

    Mostly Sunny

    • 67
    • 84

    Mostly Sunny

    • 64
    • 81

    Partly Sunny

Today 7 Sep San Diego County Coastal Areas

Partly cloudy this morning. Becoming mostly sunny. Highs 81 to 86 near the coast to 89 to 93 inland. Areas of Winds northwest to 10 Mph becoming west this afternoon.

Tonight 7 Sep San Diego County Coastal Areas

Partly cloudy. Lows 70 to 73. Areas of Winds northwest 10 to 15 Mph in the evening becoming light.

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San Dieguito Reservoir Temperature Statistics

September Temperature

Carlsbad, McClellan-Palomar Airport (7.5 miles)

  • Lowest 3 September, 2026

    62.7 °F

  • Average September

    70.8 °F

  • Highest 5 September, 2026

    80.1 °F

Climate (2021–2026)

Carlsbad, McClellan-Palomar Airport (7.5 miles)

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  • Average Low 2021–2026

    57.1 °F

  • Average 2021–2026

    63.1 °F

  • Average High 2021–2026

    69.4 °F
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