S
M
T
W
T
F
S
30
81°
55°
31
77°
57°
1
73°
54°
2
77°
48°
3
77°
57°
4
86°
63°
5
76°
52°
6
74°
53°
7
77°
60°
8
83°
57°
9
62°
51°
10
66°
51°
11
67°
52°
12
63°
50°
13
63°
50°
14
64°
49°
15
65°
51°
16
66°
53°
17
67°
52°
18
70°
48°
19
62°
50°
20
66°
48°
21
67°
49°
22
65°
46°
23
68°
48°
24
69°
47°
25
69°
49°
26
68°
44°
27
62°
41°
28
63°
40°
29
62°
40°
30
64°
48°
1
60°
43°
2
59°
40°
3
64°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Postau
Postau's September 2026 forecast shows daily high temperatures ranging from 59° to 83°, with overnight lows between 40° and 60°. The average high for September is 67° with an average low of 48°. 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 Postau. See also: October | November | December.
