Duluth Weather in September

Duluth in September averages 28°C (82°F) during the day and 17°C (63°F) at night. Keep in mind that quite a bit of rainfall is expected this month.

Rainfall in Duluth in September

Looking at the last 30 years, the data shows about 7 days with rain, averaging 97 mm (3.8 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Duluth in September

The perfect temperature in Duluth in September makes it a solid month to visit, with 28°C (82°F) during the day and 17°C (63°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights cool down to 17°C (63°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Duluth in September

Expect a lot of sunshine this month, with about 227 hours of sun. These sunny conditions add to the overall experience.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Duluth's climate page.

Duluth Temperature in September

Min Temperature 17°C (63°F)  

Max Temperature 28°C (82°F)  

Chance of Rain 25%  

Precipitation 97 mm (3.8 in)  

Rainy days 7 days  

Humidity 74% *  

Sunshine 227 hours *  

Percentage Sunshine 61% *  

* Data from: Atlanta, the United States of America (36 KM, 22 Miles).

What to Wear in Duluth in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Duluth in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Duluth's climate page.

More climate data for Duluth

Temperature Rainfall Sunshine Humidity

See the full Duluth climate overview or explore weather in the United States of America.