Harbor Island Weather Forecast

    • 46
    • 71

    Decreasing Clouds

    • 48
    • 69

    Partly Sunny

    • 50
    • 68

    Mostly Cloudy

    • 51
    • 70

    Mostly Sunny

    • 53
    • 73

    Partly Sunny

    • 52
    • 73

    Partly Sunny

Today 26 Jan San Diego County Coastal Areas

Mostly cloudy in the morning. Becoming mostly sunny. Highs around 70 near the coast to 72 inland. Areas of Winds east to 10 Mph becoming northwest 10 Mph in the afternoon.

Tonight 26 Jan San Diego County Coastal Areas

Mostly clear. Lows 41 to 46. Areas of Winds east to 10 Mph.

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Harbor Island Temperature Statistics

January Temperature

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

  • Lowest 10 January, 2026

    38.6 °F

  • Average January

    59.7 °F

  • Highest 15 January, 2026

    80.7 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    57.9 °F

  • Average 2021–2026

    63.8 °F

  • Average High 2021–2026

    70.7 °F
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