Duluth International Airport Weather Forecast

    • 32
    • 52

    Decreasing Clouds

    • 30
    • 50

    Partly Sunny

    • 38
    • 55

    Rain Showers Likely

    • 39
    • 58

    Rain Showers Likely

    • 39
    • 59

    Partly Sunny

    • 48
    • 63

    Chance Rain Showers

Today 9 May Carlton/South St. Louis

Partly sunny and cooler. Near steady temperature in the mid 50s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 9 May Carlton/South St. Louis

Mostly cloudy in the Evening, then clearing. Colder with Lows in the lower 30s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph, Diminishing to around 5 Mph after midnight.

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Duluth International Airport Temperature Statistics

May Temperature

Duluth International Airport (0 miles)

  • Lowest 1 May, 2026

    23.6 °F

  • Average May

    42 °F

  • Highest 3 May, 2026

    65.6 °F

Climate (2021–Present)

Duluth International Airport (0 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    42.2 °F

  • Average High 2021–2026

    51.1 °F
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