Thunder Bay National Marine Sanctuary Weather Forecast

    • 20
    • 37

    Rain Likely

    • 23
    • 25

    Partly Sunny

    • 30
    • 33

    Partly Sunny

    • 37
    • 41

    Breezy

    • 32
    • 43

    Chance Rain/Snow

    • 33
    • 37

    Chance Rain/Snow

Today 26 Mar Alpena

Mostly cloudy. Chance of rain Showers and slight chance of light freezing rain Early, then rain Showers and snow Showers likely in the afternoon. Patchy fog in the afternoon. Little or no snow accumulation. Highs in the lower 40s. Northwest Winds up to 10 Mph. Chance of precipitation 70 percent.

Tonight 26 Mar Alpena

Mostly cloudy early then becoming partly cloudy. Colder. Patchy fog early. Lows around 16. North Winds 5 to 15 Mph with Gusts to around 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Thunder Bay National Marine Sanctuary Temperature Statistics

March Temperature

Alpena, Alpena County Regional Airport (22.4 miles)

  • Lowest 2 March, 2026

    -5.4 °F

  • Average March

    29.3 °F

  • Highest 9 March, 2026

    69.7 °F

Climate (2021–Present)

Alpena, Alpena County Regional Airport (22.4 miles)

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  • Average Low 2021–2026

    37 °F

  • Average 2021–2026

    46.7 °F

  • Average High 2021–2026

    56.3 °F
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