Duluth International Airport Weather Forecast

    • 52
    • 73

    Thunderstorms

    • 51
    • 73

    Becoming Sunny

    • 60
    • 80

    Chance Rain Showers

    • 59
    • 84

    Rain Showers Likely

    • 55
    • 75

    Rain Showers Likely

    • 53
    • 74

    Partly Sunny

    • 55
    • 78

    Slight Chance Thunderstorms

Today 4 Jul Carlton/South St. Louis

Numerous Showers and Thunderstorms. Cooler. Near steady temperature in the lower 70s. East Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent.

Tonight 4 Jul Carlton/South St. Louis

Partly cloudy with numerous Showers and Thunderstorms this Evening, then mostly cloudy with a slight chance of Showers after midnight. Lows in the lower 50s. East Winds around 5 Mph. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Duluth International Airport Temperature Statistics

July Temperature

Duluth International Airport (0 miles)

  • Lowest 2 July, 2026

    62.1 °F

  • Average July

    72.4 °F

  • Highest 2 July, 2026

    84 °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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