S
M
T
W
T
F
S
30
75°
64°
31
70°
59°
1
72°
55°
2
73°
52°
3
73°
61°
4
79°
61°
5
71°
49°
6
74°
57°
7
84°
60°
8
69°
54°
9
66°
50°
10
65°
52°
11
64°
53°
12
63°
52°
13
64°
51°
14
64°
53°
15
66°
55°
16
68°
54°
17
67°
51°
18
67°
47°
19
64°
50°
20
66°
52°
21
66°
53°
22
68°
54°
23
69°
53°
24
70°
53°
25
69°
50°
26
65°
45°
27
63°
45°
28
64°
44°
29
65°
45°
30
61°
51°
1
63°
48°
2
60°
46°
3
65°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Siegburg
Siegburg's September 2026 forecast shows daily high temperatures ranging from 60° to 84°, with overnight lows between 44° and 60°. The average high for September is 67° with an average low of 51°. 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 Siegburg. See also: October | November | December.
