Duluth International Airport Weather Forecast

    • 22
    • 31

    Snow Likely

    • 4
    • 27

    Snow

    • -4
    • 15

    Blowing Snow

    • 12
    • 20

    Snow Likely

    • 28
    • 39

    Partly Sunny

    • 23
    • 41

    Mostly Cloudy

Today 14 Mar Carlton/South St. Louis

Partly sunny. Highs in the lower 30s. South Winds around 5 Mph.

Tonight 14 Mar Carlton/South St. Louis

Cloudy. A chance of snow in the Evening, then snow likely after midnight. Snow may be heavy at Times after midnight. Snow accumulation of 2 to 4 Inches possible. Not as cool with Lows in the lower 20s. East Winds 10 to 15 Mph. Gusts up to 30 Mph after midnight. Chance of snow 70 percent.

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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

    29.9 °F

  • Highest 8 March, 2026

    48.9 °F

Climate (2021–Present)

Duluth International Airport (0 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    42.4 °F

  • Average High 2021–2026

    51.2 °F
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