Santa Catalina Island - Isthmus Cove Weather Forecast

    • 65
    • 77

    Patchy Fog

    • 66
    • 79

    Patchy Fog

    • 66
    • 80

    Partly Sunny

Today 15 Sep Catalina and Santa Barbara Islands

Low Clouds and fog in the morning then sunny. Highs from the lower 70s near the coast to the lower 80s interior.

Tonight 15 Sep Catalina and Santa Barbara Islands

Clear in the evening then low Clouds and fog. Lows in the lower to mid 60s.

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Santa Catalina Island - Isthmus Cove Temperature Statistics

September Temperature

Torrance, Zamperini Field Airport (26.1 miles)

  • Lowest 8 September, 2025

    60.8 °F

  • Average September

    74.3 °F

  • Highest 7 September, 2025

    84.2 °F

Climate (2020–Present)

Torrance, Zamperini Field Airport (26.1 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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