Duluth International Airport Weather Forecast

    • 67
    • 87

    Slight Chance Thunderstorms

    • 71
    • 94

    Mostly Sunny

    • 71
    • 95

    Mostly Sunny

    • 65
    • 95

    Mostly Sunny

    • 60
    • 84

    Slight Chance Thunderstorms

    • 58
    • 80

    Chance Rain Showers

    • 57
    • 79

    Chance Rain Showers

Today 11 Jul Carlton/South St. Louis

Sunny, hot. Near steady temperature in the mid 80s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 11 Jul Carlton/South St. Louis

Mostly clear this Evening, then becoming partly cloudy. Lows in the mid 60s. South Winds 5 to 10 Mph.

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Duluth International Airport Temperature Statistics

July Temperature

Duluth International Airport (0 miles)

  • Lowest 6 July, 2026

    52.6 °F

  • Average July

    69.3 °F

  • Highest 2 July, 2026

    85.6 °F

Climate (2021–2026)

Duluth International Airport (0 miles)

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  • Average Low 2021–2026

    33.2 °F

  • Average 2021–2026

    42.1 °F

  • Average High 2021–2026

    51 °F
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