Semisopochnoi Island Weather Forecast

    • 51
    • 57

    Rain

    • 49
    • 54

    Rain Likely

    • 48
    • 53

    Chance Rain

    • 52
    • 58

    Rain Showers Likely

    • 52
    • 59

    Rain Showers Likely

    • 49
    • 58

    Chance Rain Showers

Today 26 Aug Shemya and Attu Islands

Rain. Highs in the upper 50s. South wind 10 to 25 Mph with Gusts to 40 Mph.

Tonight 26 Aug Shemya and Attu Islands

Mostly cloudy with a chance of Showers. Lows in the lower 50s. Southwest wind 15 to 30 Mph. Gusts to 45 Mph after midnight.

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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

    51.4 °F

  • Highest 20 August, 2026

    59.9 °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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