Semisopochnoi Island Weather Forecast

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    Breezy

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    Mostly Cloudy

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    Chance Rain Showers

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    Chance Rain Showers

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    Chance Rain Showers

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    Chance Rain Showers

Today 12 Aug Shemya and Attu Islands

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

Tonight 12 Aug Shemya and Attu Islands

Mostly clear in the evening then becoming mostly cloudy. Lows in the upper 40s. Northwest wind 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Semisopochnoi Island Temperature Statistics

August Temperature

Shemya, Eareckson AFB (236.7 miles)

  • Lowest 4 August, 2026

    45.7 °F

  • Average August

    50.4 °F

  • Highest 8 August, 2026

    55.2 °F

Climate (2021–2026)

Shemya, Eareckson AFB (236.7 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    41.1 °F

  • Average High 2021–2026

    43.7 °F
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