S
M
T
W
T
F
S
30
84°
57°
31
79°
59°
1
77°
57°
2
81°
55°
3
82°
55°
4
91°
57°
5
64°
53°
6
73°
54°
7
80°
58°
8
80°
54°
9
58°
46°
10
57°
45°
11
60°
46°
12
56°
44°
13
57°
43°
14
57°
44°
15
62°
46°
16
64°
47°
17
63°
46°
18
67°
49°
19
58°
46°
20
61°
46°
21
63°
47°
22
63°
44°
23
66°
47°
24
66°
46°
25
65°
49°
26
66°
47°
27
62°
43°
28
63°
42°
29
62°
41°
30
63°
46°
1
57°
41°
2
58°
40°
3
62°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wallgau
Wallgau's September 2026 forecast shows daily high temperatures ranging from 56° to 80°, with overnight lows between 40° and 58°. The average high for September is 63° 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 Wallgau. See also: October | November | December.