Harbor Island Weather Forecast

    • 67
    • 78

    Increasing Clouds

    • 67
    • 78

    Decreasing Clouds

    • 68
    • 78

    Partly Sunny

    • 71
    • 80

    Partly Sunny

    • 70
    • 83

    Partly Sunny

    • 69
    • 81

    Partly Sunny

    • 68
    • 78

    Partly Sunny

Today 28 Jul San Diego County Coastal Areas

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 75 to 80 near the coast to 81 to 86 inland. Areas of Winds south to 10 Mph.

Tonight 28 Jul San Diego County Coastal Areas

Partly cloudy this evening. Becoming mostly cloudy. Patchy fog this evening. Patchy fog overnight. Lows 61 to 67. Areas of Winds southwest to 10 Mph this evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Harbor Island Temperature Statistics

July Temperature

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

  • Lowest 1 July, 2026

    64.7 °F

  • Average July

    72.8 °F

  • Highest 21 July, 2026

    86.6 °F

Climate (2021–2026)

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

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    58 °F

  • Average 2021–2026

    64.1 °F

  • Average High 2021–2026

    71 °F
Get WillyWeather+ to remove ads