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Hourly Forecast
Daylight Hours
07:25
Sunrise
19:37
Sunset
Moon
Waxing Crescent
11:55
Moonrise
21:27
Moonset
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Weather in Duluth today, September 15, 2026
Plan for bright conditions in Duluth on September 15, 2026, though cloud cover thickens for a spell near 15:00. The day as a whole still leans toward sunshine.
Temperatures climb from an overnight low near 22°C toward a daytime high of about 31°C. Expect humidity between 47% and 75%, most humid near 23:00. A lighter breeze peaks around 13:00 near 4.7 km/h.
Expect a more open afternoon, with limited cloud around 20% by 15:00. Residual damp risk should be lower than earlier. Horizontal visibility holds close to 16.1 km. Sunrise is at 07:25 and sunset at 19:37, giving 12 hours 11 minutes of sunlight today.
Overall, Duluth on September 15, 2026 favours outdoor plans under mostly open skies, with a comfortable high near 31°C.
Frequently asked questions about weather in Duluth
How warm does it get in Duluth?
The warmest month in Duluth is July, with average high temperatures of 31°C. The average temperature during this period is around 26°C.
How cold does it get in Duluth?
The coldest month in Duluth is January, with average low temperatures of 2°C. The average temperature during this period is around 6°C.
What is the wettest time of year in Duluth?
The wettest month in Duluth is March, with an average of 137mm of precipitation.
What is the driest time of year in Duluth?
The driest month in Duluth is November, with an average of 82mm of precipitation.
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