Downtown - Waterfront Weather Forecast

    • 61
    • 79

    Rain Showers Likely

    • 59
    • 76

    Slight Chance Rain Showers

    • 60
    • 76

    Partly Sunny

    • 60
    • 76

    Slight Chance Thunderstorms

    • 57
    • 74

    Slight Chance Thunderstorms

    • 55
    • 71

    Partly Sunny

Today 8 Aug Carlton/South St. Louis

Patchy fog in the morning. Sunny. Highs in the upper 70s. West Winds 5 to 10 Mph.

Tonight 8 Aug Carlton/South St. Louis

Partly cloudy in the Evening, then becoming mostly cloudy. A slight chance of Thunderstorms. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Lows in the upper 50s. West Winds around 5 Mph, becoming north after midnight. Chance of rain 50 percent.

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Downtown - Waterfront Temperature Statistics

August Temperature

Duluth - Sky Harbor Airport (5 miles)

  • Lowest 5 August, 2026

    53.6 °F

  • Average August

    66 °F

  • Highest 5 August, 2026

    80.6 °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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