Average data for 10 years
1 September
Sunday
+22°
+18°
2 September
Monday
+23°
+16°
3 September
Tuesday
+21°
+16°
4 September
Wednesday
+20°
+15°
5 September
Thursday
+21°
+15°
6 September
Friday
+20°
+16°
7 September
Saturday
+19°
+15°
8 September
Sunday
+20°
+14°
9 September
Monday
+20°
+14°
10 September
Tuesday
+20°
+14°
11 September
today
+21°
+15°
12 September
tomorrow
+19°
+14°
13 September
Friday
+18°
+13°
14 September
Saturday
+17°
+13°
15 September
Sunday
+18°
+11°
16 September
Monday
+19°
+13°
17 September
Tuesday
+15°
+13°
18 September
Wednesday
+19°
+12°
19 September
Thursday
+18°
+15°
20 September
Friday
+17°
+14°
21 September
Saturday
+17°
+12°
22 September
Sunday
+17°
+13°
23 September
Monday
+18°
+12°
24 September
Tuesday
+17°
+13°
25 September
Wednesday
+18°
+12°
26 September
Thursday
+19°
+12°
27 September
Friday
+17°
+15°
28 September
Saturday
+14°
+10°
29 September
Sunday
+14°
+11°
30 September
Monday
+14°
+10°
Cities with similar weather in September
Denmark
Copenhagen
Canada
Vancouver
Poland
Gdansk
United Kingdom
Looe
Canada
Montreal
In September, the weather in Duluth is typically warm. Average daily high temperature in September is about 18 degrees above zero. On average, Duluth has 14 sunny, 12 partly cloudy, and 4 rainy days in September. The rains are usually light.