Santa Catalina Island - Catalina Harbor Weather Forecast

    • 67
    • 73

    Rain Showers Likely

    • 66
    • 73

    Rain Showers Likely

    • 65
    • 71

    Slight Chance Thunderstorms

    • 65
    • 71

    Mostly Cloudy

    • 66
    • 72

    Slight Chance Rain Showers

    • 67
    • 73

    Mostly Cloudy

Today 17 Sep Catalina and Santa Barbara Islands

Mostly cloudy. A 20 percent chance of Showers and Thunderstorms in the afternoon. Highs from the mid to upper 70s near the coast to the mid 80s interior.

Tonight 17 Sep Catalina and Santa Barbara Islands

A chance of Showers with a slight chance of Thunderstorms in the Evening, then Showers likely with a slight chance of Thunderstorms after midnight. Lows in the upper 50s and 60s. Chance of precipitation 60 percent.

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  • Temperature Real-Time

Santa Catalina Island - Catalina Harbor Temperature Statistics

September Temperature

Torrance, Zamperini Field Airport (26.7 miles)

  • Lowest 8 September, 2025

    60.8 °F

  • Average September

    74.1 °F

  • Highest 7 September, 2025

    84.2 °F

Climate (2020–Present)

Torrance, Zamperini Field Airport (26.7 miles)

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  • Average Low 2020–2025

    56.2 °F

  • Average 2020–2025

    65.8 °F

  • Average High 2020–2025

    72 °F
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