Harbor Island Weather Forecast

    • 60
    • 66

    Rain Likely

    • 60
    • 69

    Rain

    • 56
    • 66

    Rain Showers

    • 51
    • 63

    Rain Showers Likely

    • 48
    • 61

    Partly Sunny

    • 51
    • 63

    Mostly Cloudy

Today 23 Dec San Diego County Coastal Areas

Patchy fog this morning. Cloudy with a chance of Showers. Highs around 66. Areas of Winds south 10 Mph. Chance of measurable precipitation 40 percent.

Tonight 23 Dec San Diego County Coastal Areas

Showers likely in the Evening, then rain likely and a slight chance of Thunderstorms overnight. Lows 55 to 59. Areas of Winds southeast 10 to 15 Mph. Gusts to 25 Mph. Becoming 30 Mph overnight. Chance of measurable precipitation 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harbor Island Temperature Statistics

December Temperature

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

  • Lowest 5 December, 2025

    46 °F

  • Average December

    59.2 °F

  • Highest 10 December, 2025

    80.1 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    57.9 °F

  • Average 2020–2025

    63.8 °F

  • Average High 2020–2025

    70.6 °F
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