Perry Island (South Bay) Weather Forecast

    • 58
    • 66

    Breezy

    • 56
    • 67

    Mostly Sunny

    • 54
    • 66

    Partly Sunny

    • 54
    • 66

    Mostly Cloudy

    • 53
    • 61

    Rain Likely

    • 53
    • 62

    Rain Likely

    • 54
    • 63

    Chance Rain

Today 21 Jul West Prince William Sound & Whittier

Sunny. Highs in the upper 50s to mid 60s. West wind 15 Mph with Gusts to 25 Mph.

Tonight 21 Jul West Prince William Sound & Whittier

Mostly clear. Lows in the lower 50s. West wind 10 to 25 Mph.

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Perry Island (South Bay) Temperature Statistics

July Temperature

Portage, Portage Glacier (31.1 miles)

  • Lowest 4 July, 2025

    39.7 °F

  • Average July

    54.3 °F

  • Highest 13 July, 2025

    68.6 °F

Climate (2020–Present)

Portage, Portage Glacier (31.1 miles)

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  • Average Low 2020–2025

    33.2 °F

  • Average 2020–2025

    39 °F

  • Average High 2020–2025

    44.6 °F
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