Duluth Harbor Basin Weather Forecast

    • 19
    • 41

    Mostly Sunny

    • 30
    • 40

    Rain/Snow

    • 31
    • 37

    Rain/Snow

    • 27
    • 42

    Partly Sunny

    • 28
    • 45

    Partly Sunny

    • 26
    • 46

    Partly Sunny

Today 31 Mar Carlton/South St. Louis

Sunny. Near steady temperature around 40. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 31 Mar Carlton/South St. Louis

Clear in the Evening, then becoming partly cloudy. Lows around 16. North Winds 5 to 10 Mph, becoming east after midnight.

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Duluth Harbor Basin Temperature Statistics

March Temperature

Duluth - Sky Harbor Airport (3.7 miles)

  • Lowest 1 March, 2025

    6.8 °F

  • Average March

    31.8 °F

  • Highest 10 March, 2025

    60.8 °F

Climate (2020–Present)

Duluth - Sky Harbor Airport (3.7 miles)

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  • Average Low 2020–2025

    35.9 °F

  • Average 2020–2025

    42.8 °F

  • Average High 2020–2025

    49.8 °F
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