S
M
T
W
T
F
S
30
76°
62°
31
73°
60°
1
73°
55°
2
75°
51°
3
75°
54°
4
85°
63°
5
73°
57°
6
73°
47°
7
82°
59°
8
87°
61°
9
67°
47°
10
67°
48°
11
68°
49°
12
70°
50°
13
71°
51°
14
71°
51°
15
76°
55°
16
71°
52°
17
67°
51°
18
69°
50°
19
68°
51°
20
64°
50°
21
64°
51°
22
63°
50°
23
66°
51°
24
67°
49°
25
67°
51°
26
66°
46°
27
60°
44°
28
61°
42°
29
60°
42°
30
63°
50°
1
59°
46°
2
57°
43°
3
62°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Westheim
Westheim's September 2026 forecast shows daily high temperatures ranging from 57° to 87°, with overnight lows between 42° and 61°. The average high for September is 67° with an average low of 49°. 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 Westheim. See also: October | November | December.
