S
M
T
W
T
F
S
30
75°
61°
31
72°
57°
1
73°
52°
2
75°
54°
3
77°
54°
4
84°
61°
5
N/A
6
79°
58°
7
86°
60°
8
75°
53°
9
66°
46°
10
68°
47°
11
65°
51°
12
64°
49°
13
63°
50°
14
64°
51°
15
67°
53°
16
67°
53°
17
68°
51°
18
70°
51°
19
64°
46°
20
68°
48°
21
67°
53°
22
69°
52°
23
69°
52°
24
70°
51°
25
70°
52°
26
68°
48°
27
64°
46°
28
66°
46°
29
66°
44°
30
65°
51°
1
64°
47°
2
61°
45°
3
65°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Neunkirchen
Neunkirchen's September 2026 forecast shows daily high temperatures ranging from 61° to 86°, with overnight lows between 44° and 60°. The average high for September is 68° 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 Neunkirchen. See also: October | November | December.