Catherine Island Weather Forecast

    • 52
    • 60

    Chance Rain Showers

    • 54
    • 58

    Chance Rain

    • 55
    • 62

    Chance Rain

    • 55
    • 68

    Slight Chance Rain

    • 54
    • 69

    Partly Sunny

    • 54
    • 67

    Partly Sunny

    • 54
    • 66

    Slight Chance Rain

Today 20 Aug City and Borough of Sitka

Mostly cloudy. Highs in the lower 60s. Near little port Walter, increasing Clouds. Patchy fog early in the morning. Slight chance of rain Showers in the afternoon. Southwest Winds around 10 Mph.

Tonight 20 Aug City and Borough of Sitka

Mostly cloudy. Slight chance of rain Showers early in the evening. Patchy fog late. Lows in the lower 50s. South Winds around 10 Mph in the evening becoming light.

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Catherine Island Temperature Statistics

August Temperature

Angoon (14.9 miles)

  • Lowest 6 August, 2025

    48.9 °F

  • Average August

    55.9 °F

  • Highest 6 August, 2025

    68 °F

Climate (2020–Present)

Angoon (14.9 miles)

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  • Average Low 2020–2025

    39.1 °F

  • Average 2020–2025

    43.1 °F

  • Average High 2020–2025

    47.6 °F
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