S
M
T
W
T
F
S
30
81°
66°
31
73°
59°
1
77°
54°
2
77°
54°
3
79°
54°
4
88°
63°
5
75°
59°
6
75°
59°
7
87°
59°
8
86°
60°
9
68°
48°
10
68°
46°
11
70°
49°
12
70°
52°
13
71°
52°
14
73°
54°
15
76°
56°
16
67°
52°
17
65°
50°
18
64°
51°
19
64°
50°
20
68°
49°
21
67°
53°
22
67°
53°
23
69°
52°
24
70°
52°
25
70°
50°
26
68°
46°
27
63°
44°
28
64°
43°
29
64°
43°
30
63°
50°
1
63°
46°
2
60°
44°
3
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kleinostheim
Kleinostheim's September 2026 forecast shows daily high temperatures ranging from 60° to 87°, with overnight lows between 43° and 60°. 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 Kleinostheim. See also: October | November | December.