Duluth International Airport Weather Forecast

    • 43
    • 66

    Partly Sunny

    • 48
    • 72

    Mostly Cloudy

    • 45
    • 68

    Partly Sunny

    • 48
    • 72

    Partly Sunny

    • 55
    • 81

    Chance Thunderstorms

    • 53
    • 78

    Chance Rain Showers

    • 49
    • 70

    Chance Rain Showers

Today 30 May Carlton/South St. Louis

Mostly sunny and not as warm. Near steady temperature in the upper 60s. East Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 30 May Carlton/South St. Louis

Mostly cloudy in the Evening, then becoming partly cloudy. Not as cool with Lows in the mid 40s. East Winds 10 to 15 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

    49.3 °F

  • Highest 25 May, 2026

    85.6 °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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