San Diego Weather Forecast

    • 66
    • 78

    Mostly Sunny

    • 72
    • 81

    Partly Sunny

    • 72
    • 83

    Slight Chance Rain Showers

    • 70
    • 83

    Partly Sunny

    • 71
    • 83

    Partly Sunny

    • 71
    • 83

    Partly Sunny

Today 4 Sep San Diego County Coastal Areas

Mostly sunny. Highs 73 to 77 near the coast to 80 inland. Areas of Winds east to 10 Mph becoming west 10 Mph this afternoon.

Tonight 4 Sep San Diego County Coastal Areas

Partly cloudy. Lows 61 to 66. Areas of Winds west to 10 Mph in the evening becoming light.

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San Diego Temperature Statistics

September Temperature

San Diego, San Diego International-Lindbergh Field (1.2 miles)

  • Lowest 2 September, 2026

    66 °F

  • Average September

    72.2 °F

  • Highest 1 September, 2026

    79.6 °F

Climate (2021–2026)

San Diego, San Diego International-Lindbergh Field (1.2 miles)

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  • Average Low 2021–2026

    58.1 °F

  • Average 2021–2026

    64.2 °F

  • Average High 2021–2026

    71.1 °F
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