Duluth Harbor Basin Weather Forecast

    • 48
    • 52

    Rain Showers Likely

    • 45
    • 55

    Decreasing Clouds

    • 42
    • 55

    Partly Sunny

    • 42
    • 56

    Chance Rain Showers

    • 34
    • 49

    Mostly Sunny

    • 44
    • 55

    Mostly Sunny

    • 45
    • 60

    Partly Sunny

Today 12 Oct Carlton/South St. Louis

Sunny. Highs in the lower 60s.

Tonight 12 Oct Carlton/South St. Louis

Cloudy with a chance of Showers. A slight chance of Thunderstorms early this Evening, then a slight chance of drizzle. Patchy fog. Near steady temperature in the mid 40s. East Winds 10 to 15 Mph, becoming north 5 to 10 Mph. Gusts up to 30 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Duluth Harbor Basin Temperature Statistics

October Temperature

Duluth - Sky Harbor Airport (3.7 miles)

  • Lowest 5 October, 2026

    39.2 °F

  • Average October

    55.7 °F

  • Highest 6 October, 2026

    75.2 °F

Climate (2021–2026)

Duluth - Sky Harbor Airport (3.7 miles)

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  • Average Low 2021–2026

    35.7 °F

  • Average 2021–2026

    42.5 °F

  • Average High 2021–2026

    49.4 °F
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