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
73°
50°
6
77°
53°
7
87°
61°
8
72°
54°
9
69°
48°
10
69°
49°
11
68°
54°
12
67°
51°
13
65°
50°
14
67°
53°
15
69°
52°
16
71°
53°
17
70°
49°
18
70°
49°
19
66°
48°
20
69°
50°
21
68°
54°
22
70°
53°
23
70°
53°
24
71°
52°
25
70°
50°
26
68°
46°
27
65°
45°
28
67°
44°
29
67°
44°
30
66°
51°
1
66°
47°
2
62°
46°
3
66°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sinzig
Sinzig's September 2026 forecast shows daily high temperatures ranging from 62° to 87°, with overnight lows between 44° and 61°. The average high for September is 69° with an average low of 50°. 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 Sinzig. See also: October | November | December.