Duluth Weather Forecast

    • 40
    • 48

    Rain Showers

    • 40
    • 55

    Rain Showers

    • 35
    • 48

    Rain Showers Likely

    • 37
    • 52

    Partly Sunny

    • 41
    • 58

    Slight Chance Rain Showers

    • 43
    • 59

    Partly Sunny

Today 17 May Carlton/South St. Louis

Partly sunny with a slight chance of Showers in the Morning, then cloudy with a chance of Showers with a slight chance of Thunderstorms in the afternoon. Much cooler with Highs in the lower 50s. Temperature falling into the mid 40s in the afternoon. East Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 50 percent.

Tonight 17 May Carlton/South St. Louis

Mostly clear and cooler. Near steady temperature around 40. East Winds 5 to 10 Mph with Gusts up to 25 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Duluth Temperature Statistics

May Temperature

Duluth - Sky Harbor Airport (5 miles)

  • Lowest 1 May, 2026

    30.2 °F

  • Average May

    45.8 °F

  • Highest 2 May, 2026

    64.4 °F

Climate (2021–Present)

Duluth - Sky Harbor Airport (5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    35.9 °F

  • Average 2021–2026

    42.7 °F

  • Average High 2021–2026

    49.7 °F
Get WillyWeather+ to remove ads