Thunder Bay National Marine Sanctuary Weather Forecast

    • 63
    • 65

    Decreasing Clouds

    • 64
    • 70

    Mostly Sunny

    • 63
    • 74

    Mostly Sunny

    • 62
    • 69

    Sunny

    • 64
    • 71

    Mostly Sunny

    • 66
    • 72

    Slight Chance Rain Showers

    • 66
    • 73

    Slight Chance Rain Showers

Today 8 Aug Alpena

Cloudy. Rain Showers and slight chance of Thunderstorms Early, then Areas of drizzle in the afternoon. Patchy fog through the day. Locally heavy rainfall possible early. Highs in the upper 60s. Northeast Winds 5 to 10 Mph with Gusts to around 20 Mph shifting to the north 10 to 15 Mph with Gusts to around 30 Mph in the afternoon.

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Thunder Bay National Marine Sanctuary Temperature Statistics

August Temperature

Alpena, Alpena County Regional Airport (22.4 miles)

  • Lowest 5 August, 2022

    51.1 °F

  • Average August

    70.6 °F

  • Highest 6 August, 2022

    93 °F

Climate (2010–Present)

Alpena, Alpena County Regional Airport (22.4 miles)

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  • Average Low 2010–Present

    36.1 °F

  • Average 2010–Present

    45.5 °F

  • Average High 2010–Present

    54.7 °F
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