Weather in Duluth in September
Duluth, United States averages a high of 20.1°C (68.2°F) and low of 13.9°C (57°F) in September, with 10 rain days and 9.4 hours of daily sunshine. Travel score: 76.2/100 (Good). The best time to visit Duluth is August.
High
20°C68°F
Low
14°C57°F
🌧️
10
rain days
☀️
9.4
hrs/day sunshine
💧
72%
humidity
76— Good
September in Duluth is mild and occasionally wet — good for most activities.
What are the average temperatures in Duluth?
How much does it rain in Duluth in September?
Duluth receives an average of 81.5mm of rainfall across 10 rainy days in September. The annual total is 833.7mm.
What should I pack for Duluth in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 20°C
🧴
Sunscreen SPF 30+
9 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (10 days)
☔
Umbrella
Be prepared for occasional showers
Traveling to United States in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31