Montague Island Weather Forecast

    • 53
    • 58

    Mostly Cloudy

    • 54
    • 61

    Partly Sunny

    • 55
    • 62

    Mostly Cloudy

    • 55
    • 61

    Mostly Cloudy

    • 55
    • 60

    Chance Rain

    • 55
    • 59

    Chance Rain

Today 21 Aug West Prince William Sound & Whittier

Mostly cloudy with scattered Showers. Highs in the upper 50s. Light Winds becoming variable 10 Mph in the afternoon.

Tonight 21 Aug West Prince William Sound & Whittier

Mostly cloudy. A slight chance of rain in the evening. Lows in the upper 40s. Light Winds becoming variable 10 Mph after midnight.

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Montague Island Temperature Statistics

August Temperature

Middleton Island Airport (59.7 miles)

  • Lowest 3 August, 2025

    53.1 °F

  • Average August

    57.1 °F

  • Highest 17 August, 2025

    64 °F

Climate (2020–Present)

Middleton Island Airport (59.7 miles)

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  • Average Low 2020–2025

    41.2 °F

  • Average 2020–2025

    43.7 °F

  • Average High 2020–2025

    46.4 °F
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