San Clemente Island - Northwest Harbor Weather Forecast

    • 60
    • 64

    Mostly Cloudy

    • 58
    • 65

    Partly Sunny

    • 60
    • 65

    Partly Sunny

    • 60
    • 66

    Patchy Fog

    • 59
    • 64

    Patchy Fog

    • 58
    • 63

    Patchy Fog

Today 24 Feb Catalina and Santa Barbara Islands

Partly cloudy in the morning then mostly cloudy. Highs in the mid 60s to mid 70s.

Tonight 24 Feb Catalina and Santa Barbara Islands

Partly cloudy in the evening then clear. Lows in the 50s to around 60.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

San Clemente Island - Northwest Harbor Temperature Statistics

February Temperature

San Clemente Island NALF (0.6 miles)

  • Lowest 19 February, 2026

    50 °F

  • Average February

    62.6 °F

  • Highest 4 February, 2026

    77 °F

Climate (2021–Present)

San Clemente Island NALF (0.6 miles)

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

  • Average Low 2021–2026

    57.2 °F

  • Average 2021–2026

    61.6 °F

  • Average High 2021–2026

    66.2 °F
Get WillyWeather+ to remove ads