Harbor Island Weather Forecast

    • 60
    • 70

    Chance Rain Showers

    • 57
    • 69

    Mostly Cloudy

    • 55
    • 68

    Mostly Cloudy

    • 56
    • 72

    Partly Sunny

    • 57
    • 75

    Mostly Sunny

    • 58
    • 75

    Partly Sunny

Today 31 Mar San Diego County Coastal Areas

Cloudy. Highs 69 to 73. Light Winds becoming southwest 10 Mph this afternoon.

Tonight 31 Mar San Diego County Coastal Areas

Mostly cloudy. A slight chance of Showers in the evening. Lows 54 to 60. Light Winds. Chance of measurable precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harbor Island Temperature Statistics

March Temperature

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

  • Lowest 6 March, 2026

    48.7 °F

  • Average March

    66.5 °F

  • Highest 8 March, 2026

    89.7 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    58 °F

  • Average 2021–2026

    64 °F

  • Average High 2021–2026

    70.9 °F
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