S
M
T
W
T
F
S
30
93°
67°
31
90°
66°
1
91°
67°
2
92°
68°
3
93°
69°
4
93°
68°
5
92°
65°
6
90°
58°
7
82°
57°
8
83°
61°
9
84°
65°
10
88°
63°
11
82°
57°
12
81°
61°
13
80°
62°
14
79°
62°
15
88°
53°
16
86°
53°
17
76°
52°
18
75°
53°
19
76°
52°
20
74°
51°
21
74°
51°
22
75°
50°
23
76°
51°
24
77°
53°
25
76°
59°
26
80°
57°
27
81°
58°
28
79°
57°
29
81°
48°
30
78°
49°
1
74°
50°
2
73°
47°
3
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Duenweg
Duenweg's September 2026 forecast shows daily high temperatures ranging from 72° to 93°, with overnight lows between 47° and 69°. The average high for September is 82° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Duenweg. See also: October | November | December.