S
M
T
W
T
F
S
30
75°
50°
31
77°
54°
1
78°
55°
2
77°
54°
3
78°
52°
4
69°
49°
5
68°
47°
6
67°
47°
7
70°
45°
8
69°
45°
9
74°
49°
10
75°
51°
11
71°
51°
12
67°
50°
13
67°
47°
14
68°
50°
15
66°
52°
16
68°
50°
17
69°
48°
18
70°
44°
19
69°
42°
20
68°
41°
21
67°
39°
22
64°
40°
23
64°
40°
24
63°
41°
25
63°
43°
26
67°
42°
27
68°
44°
28
67°
44°
29
66°
42°
30
62°
39°
1
61°
46°
2
67°
41°
3
67°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Passau
Passau's September 2026 forecast shows daily high temperatures ranging from 61° to 78°, with overnight lows between 38° and 55°. The average high for September is 69° with an average low of 46°. 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 Passau. See also: October | November | December.
