Duluth Weather Forecast
- 68
- 76
Thunderstorms
- 66
- 81
Rain Showers Likely
- 63
- 81
Slight Chance Thunderstorms
- 62
- 81
Partly Sunny
- 66
- 81
Slight Chance Thunderstorms
- 66
- 85
Chance Thunderstorms
Today 22 Jul Carlton/South St. Louis
Cloudy with a chance of Showers and Thunderstorms. Humid with Highs around 80. Southeast Winds 5 to 10 Mph. Chance of rain 50 percent.
Tonight 22 Jul Carlton/South St. Louis
Showers, Thunderstorms. Some Thunderstorms may produce heavy rainfall. Humid with Lows in the mid 60s. South Winds 5 to 10 Mph. Chance of rain 90 percent.
Duluth Temperature Statistics
July Temperature
Duluth - Sky Harbor Airport (5 miles)
Lowest 17 July, 2025
50 °FAverage July
65.2 °FHighest 14 July, 2025
87.8 °F
Climate (2020–Present)
Duluth - Sky Harbor Airport (5 miles)
Average Low 2020–2025
35.8 °FAverage 2020–2025
42.7 °FAverage High 2020–2025
49.7 °F