Duluth International Airport Weather Forecast

    • 26
    • 48

    Chance Flurries

    • 27
    • 50

    Partly Sunny

    • 30
    • 40

    Chance Rain Showers

    • 21
    • 41

    Mostly Cloudy

    • 21
    • 37

    Partly Sunny

    • 29
    • 42

    Chance Rain/Snow

Today 28 Mar Carlton/South St. Louis

Mostly cloudy with a slight chance of snow Showers this Morning, then partly sunny this afternoon. Much warmer with Highs in the lower 50s. South Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of snow 20 percent.

Tonight 28 Mar Carlton/South St. Louis

Partly cloudy in the Evening, then becoming mostly cloudy. Not as cool with Lows in the upper 20s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming east after midnight.

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Duluth International Airport Temperature Statistics

March Temperature

Duluth International Airport (0 miles)

  • Lowest 1 March, 2026

    -10.4 °F

  • Average March

    28.6 °F

  • Highest 21 March, 2026

    64.7 °F

Climate (2021–Present)

Duluth International Airport (0 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    42.3 °F

  • Average High 2021–2026

    51.2 °F
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