Duluth Weather Forecast

    • 55
    • 73

    Mostly Sunny

    • 59
    • 77

    Mostly Sunny

    • 64
    • 83

    Mostly Sunny

    • 62
    • 84

    Chance Rain Showers

    • 61
    • 79

    Chance Rain Showers

    • 60
    • 76

    Slight Chance Rain Showers

Today 4 Aug Carlton/South St. Louis

Partly sunny this Morning, then clearing. Cooler with Highs in the lower 70s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 4 Aug Carlton/South St. Louis

Mostly clear. Lows in the upper 40s. West Winds 5 to 10 Mph in the Evening, becoming light and variable.

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  • Temperature Real-Time

Duluth Temperature Statistics

August Temperature

Duluth - Sky Harbor Airport (5 miles)

  • Lowest 2 August, 2026

    60.8 °F

  • Average August

    65.5 °F

  • Highest 1 August, 2026

    71.6 °F

Climate (2021–2026)

Duluth - Sky Harbor Airport (5 miles)

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  • Average Low 2021–2026

    35.7 °F

  • Average 2021–2026

    42.4 °F

  • Average High 2021–2026

    49.4 °F
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