Duluth International Airport Weather Forecast

    • 52
    • 75

    Becoming Sunny

    • 56
    • 79

    Chance Rain Showers

    • 49
    • 73

    Mostly Sunny

    • 52
    • 74

    Mostly Sunny

    • 58
    • 79

    Partly Sunny

    • 57
    • 79

    Slight Chance Thunderstorms

Today 16 Aug Carlton/South St. Louis

Mostly cloudy in the Morning, then becoming mostly sunny. Highs in the mid 70s. Northwest Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 16 Aug Carlton/South St. Louis

Mostly cloudy. Near steady temperature in the lower 60s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Duluth International Airport Temperature Statistics

August Temperature

Duluth International Airport (0 miles)

  • Lowest 5 August, 2026

    48.7 °F

  • Average August

    66.6 °F

  • Highest 6 August, 2026

    80.7 °F

Climate (2021–2026)

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 °F
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