Santa Catalina Island - Isthmus Cove Weather Forecast

    • 66
    • 76

    Mostly Cloudy

    • 62
    • 74

    Patchy Fog

    • 65
    • 72

    Mostly Sunny

    • 67
    • 81

    Mostly Sunny

    • 67
    • 82

    Partly Sunny

    • 66
    • 80

    Partly Sunny

Today 26 Sep Catalina and Santa Barbara Islands

Cloudy in the morning then partly cloudy. Highs from the mid 70s to around 80 near the coast to the mid to upper 80s interior.

Tonight 26 Sep Catalina and Santa Barbara Islands

Low Clouds and fog. Lows in the upper 50s and 60s.

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  • Temperature Real-Time

Santa Catalina Island - Isthmus Cove Temperature Statistics

September Temperature

Torrance, Zamperini Field Airport (26.1 miles)

  • Lowest 2 September, 2026

    60.8 °F

  • Average September

    71.3 °F

  • Highest 9 September, 2026

    98.6 °F

Climate (2021–2026)

Torrance, Zamperini Field Airport (26.1 miles)

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  • Average Low 2021–2026

    56 °F

  • Average 2021–2026

    65.6 °F

  • Average High 2021–2026

    72.2 °F
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