Duluth (MN)
September
Weather in Duluth, Minnesota for September 2027
Your guide to Duluth weather in September - trends and predictions
In general, the average temperature in Duluth at the beginning of September is 19.9 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 21.2 °C by the end of September.
Duluth experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 138.4 mm.
Is September a good time to visit Duluth? check out the best time to travel to Duluth page.
✨ Is September a good time to visit Duluth? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
20
Dry days
10
Rainy days
0
Snow days
21°/13°
Temperatures
18 km/h
Avg max wind
77 %
Avg humidity
Duluth Weather September
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Temperatures trend during September in Duluth
See the weather trend as well as the moving average line
September weather in Duluth day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 25° /15° | 1 mm | 6 | |
| Sept. 2 |  Light rain | 22° /15° | 7.6 mm | 6 | |
| Sept. 3 | Light rain | 21° /12° | 3.1 mm | 5 | |
| Sept. 4 | Light rain | 20° /12° | 3.4 mm | 4 | |
| Sept. 5 |  Heavy rain at times | 17° /12° | 12.3 mm | 3 | |
| Sept. 6 | Patchy rain possible | 17° /11° | 0.7 mm | 5 | |
| Sept. 7 |  Sunny | 18° /9° | 0.4 mm | 3 | |
| Sept. 8 |  Heavy rain | 24° /12° | 55.4 mm | 4 | |
| Sept. 9 | Patchy rain possible | 22° /15° | 2.3 mm | 6 | |
| Sept. 10 | Patchy rain possible | 21° /13° | 0 mm | 5 | |
| Sept. 11 | Patchy rain possible | 23° /14° | 1.5 mm | 4 | |
| Sept. 12 |  Moderate rain | 19° /13° | 10.9 mm | 5 | |
| Sept. 13 | Sunny | 19° /12° | 0 mm | 5 | |
| Sept. 14 | Light rain | 18° /12° | 5.4 mm | 4 | |
| Sept. 15 | Patchy rain possible | 23° /13° | 0.5 mm | 5 | |
| Sept. 16 | Light rain | 25° /14° | 3 mm | 5 | |
| Sept. 17 | Patchy rain possible | 25° /17° | 1.1 mm | 5 | |
| Sept. 18 | Sunny | 20° /15° | 0 mm | 4 | |
| Sept. 19 |  Moderate or heavy rain shower | 19° /14° | 8.5 mm | 4 | |
| Sept. 20 | Light rain | 18° /13° | 5 mm | 4 | |
| Sept. 21 | Heavy rain at times | 20° /12° | 14.1 mm | 4 | |
| Sept. 22 | Sunny | 18° /10° | 0 mm | 4.9 | |
| Sept. 23 | Sunny | 18° /10° | 0 mm | 4.8 | |
| Sept. 24 |  Partly cloudy | 19° /10° | 0.3 mm | 4 | |
| Sept. 25 |  Overcast | 21° /11° | 0 mm | 4.6 | |
| Sept. 26 | Overcast | 20° /13° | 0 mm | 4 | |
| Sept. 27 |  Cloudy | 24° /12° | 0 mm | 4 | |
| Sept. 28 | Sunny | 23° /11° | 0 mm | 4.3 | |
| Sept. 29 | Patchy rain possible | 21° /12° | 1.8 mm | 4 | |
| Sept. 30 |  Mist | 21° /12° | 0.1 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Duluth in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Duluth forecast closer to your planned date for the most up-to-date weather information.
Change Month
Duluth in September - FAQ
What are the expected maximum and minimum temperatures in Duluth during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Duluth during September?
Significant rainfall exceeding 138.4 mm is expected in Duluth during September, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Duluth during September?
The average wind speed in Duluth during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Duluth
Explore the daily rainfall trends and prepare for Duluths September weather 💧
Typically, Duluth has 10 rainy days in September with a total of 138.4 mm of rainfall.
UV exposure in Duluth during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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