Seal Island Weather Forecast

    • 58
    • 60

    Mostly Sunny

    • 55
    • 63

    Mostly Cloudy

    • 55
    • 60

    Rain Likely

    • 55
    • 60

    Chance Rain

    • 57
    • 62

    Chance Rain

    • 57
    • 63

    Partly Sunny

Today 11 Aug West Prince William Sound & Whittier

Mostly sunny. Highs in the mid 50s to lower 60s. Northwest wind 10 to 20 Mph.

Tonight 11 Aug West Prince William Sound & Whittier

Mostly clear. Lows in the upper 40s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Seal Island Temperature Statistics

August Temperature

Portage, Portage Glacier (54.1 miles)

  • Lowest 4 August, 2025

    39.7 °F

  • Average August

    53.6 °F

  • Highest 4 August, 2025

    68.6 °F

Climate (2020–Present)

Portage, Portage Glacier (54.1 miles)

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  • Average Low 2020–2025

    33.3 °F

  • Average 2020–2025

    39.1 °F

  • Average High 2020–2025

    44.7 °F
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