S
M
T
W
T
F
S
30
80°
60°
31
74°
60°
1
73°
56°
2
75°
53°
3
73°
56°
4
84°
61°
5
72°
54°
6
72°
50°
7
75°
50°
8
90°
57°
9
70°
55°
10
64°
49°
11
N/A
12
71°
52°
13
72°
57°
14
71°
51°
15
75°
54°
16
71°
51°
17
67°
48°
18
69°
50°
19
71°
52°
20
70°
52°
21
68°
49°
22
69°
51°
23
66°
49°
24
71°
48°
25
71°
48°
26
64°
44°
27
61°
44°
28
66°
43°
29
68°
38°
30
59°
39°
1
58°
38°
2
58°
37°
3
59°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Passau
Passau's September 2026 forecast shows daily high temperatures ranging from 58° to 75°, with overnight lows between 37° and 57°. The average high for September is 67° with an average low of 47°. 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.
