Harbor Island Weather Forecast

    • 70
    • 89

    Mostly Sunny

    • 69
    • 86

    Patchy Fog

    • 69
    • 82

    Partly Sunny

    • 68
    • 79

    Mostly Cloudy

    • 65
    • 74

    Chance Rain Showers

    • 63
    • 72

    Chance Rain Showers

Today 7 Oct San Diego County Coastal Areas

Mostly sunny. Highs 85 to 90 near the coast to 94 to 97 inland. Light Winds becoming west 10 Mph in the afternoon.

Tonight 7 Oct San Diego County Coastal Areas

Mostly clear in the evening. Becoming partly cloudy. Lows around 70. Light Winds.

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Harbor Island Temperature Statistics

October Temperature

San Diego, San Diego International-Lindbergh Field (0.6 miles)

  • Lowest 1 October, 2026

    66.7 °F

  • Average October

    82 °F

  • Highest 3 October, 2026

    102.9 °F

Climate (2021–2026)

San Diego, San Diego International-Lindbergh Field (0.6 miles)

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  • Average Low 2021–2026

    58.1 °F

  • Average 2021–2026

    64.3 °F

  • Average High 2021–2026

    71.2 °F
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