Thunder Bay Weather Forecast

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    Chance Rain Showers

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    Rain Showers Likely

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    Chance Rain Showers

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    Mostly Cloudy

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    Partly Sunny

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    Chance Rain Showers

Today 22 Oct Alpena

Partly sunny. Slight chance of rain Showers Early, then chance of rain Showers in the afternoon. Highs in the lower 50s. Northwest Winds 5 to 15 Mph. Gusts up to 25 Mph in the afternoon. Chance of Showers 50 percent.

Tonight 22 Oct Alpena

Mostly cloudy. Chance of rain Showers and slight chance of Thunderstorms Early, then chance of rain Showers after midnight. Lows in the mid 30s. Northwest Winds 5 to 15 Mph with Gusts to around 25 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

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Thunder Bay Temperature Statistics

October Temperature

Alpena, Alpena County Regional Airport (13 miles)

  • Lowest 9 October, 2025

    34 °F

  • Average October

    55.4 °F

  • Highest 4 October, 2025

    87.1 °F

Climate (2020–Present)

Alpena, Alpena County Regional Airport (13 miles)

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  • Average Low 2020–2025

    37.3 °F

  • Average 2020–2025

    47 °F

  • Average High 2020–2025

    56.6 °F
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