S
M
T
W
T
F
S
30
79°
63°
31
75°
61°
1
75°
55°
2
77°
52°
3
79°
55°
4
88°
63°
5
77°
57°
6
77°
50°
7
88°
60°
8
90°
62°
9
67°
50°
10
71°
48°
11
72°
50°
12
74°
49°
13
75°
55°
14
74°
55°
15
77°
57°
16
72°
54°
17
72°
53°
18
72°
51°
19
71°
52°
20
67°
50°
21
68°
54°
22
69°
53°
23
70°
52°
24
71°
53°
25
71°
53°
26
70°
48°
27
65°
46°
28
66°
45°
29
66°
46°
30
65°
52°
1
63°
46°
2
61°
44°
3
65°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Backnang
Backnang's September 2026 forecast shows daily high temperatures ranging from 61° to 90°, with overnight lows between 44° and 62°. The average high for September is 71° 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 Backnang. See also: October | November | December.