Duluth International Airport Weather Forecast

    • 39
    • 71

    Mostly Sunny

    • 39
    • 48

    Rain Showers

    • 37
    • 54

    Rain Showers

    • 32
    • 48

    Rain Showers Likely

    • 35
    • 54

    Partly Sunny

    • 40
    • 60

    Slight Chance Rain Showers

    • 41
    • 62

    Partly Sunny

Today 16 May Carlton/South St. Louis

Sunny, breezy and not as warm. Near steady temperature in the upper 60s. Temperature falling into the upper 60s late. West Winds 15 to 25 Mph.

Tonight 16 May Carlton/South St. Louis

Mostly clear. Cooler with Lows in the upper 30s. North Winds 5 to 10 Mph, becoming northeast after midnight. Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Duluth International Airport Temperature Statistics

May Temperature

Duluth International Airport (0 miles)

  • Lowest 1 May, 2026

    23.6 °F

  • Average May

    44.4 °F

  • Highest 13 May, 2026

    67.6 °F

Climate (2021–Present)

Duluth International Airport (0 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    42.2 °F

  • Average High 2021–2026

    51.1 °F
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