S
M
T
W
T
F
S
30
77°
51°
31
79°
48°
1
79°
50°
2
78°
51°
3
78°
54°
4
77°
54°
5
74°
53°
6
72°
51°
7
75°
52°
8
76°
52°
9
71°
48°
10
69°
46°
11
68°
47°
12
68°
45°
13
69°
44°
14
67°
42°
15
67°
45°
16
68°
41°
17
71°
40°
18
66°
41°
19
65°
43°
20
66°
42°
21
66°
41°
22
67°
42°
23
65°
43°
24
66°
42°
25
65°
41°
26
64°
42°
27
Hist. Avg.
64°
47°
28
Hist. Avg.
64°
47°
29
Hist. Avg.
64°
47°
30
Hist. Avg.
63°
46°
1
Hist. Avg.
63°
46°
2
Hist. Avg.
63°
46°
3
Hist. Avg.
63°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Altötting
Altötting's September 2026 forecast shows daily high temperatures ranging from 64° to 79°, with overnight lows between 40° and 54°. The average high for September is 70° 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 Altötting. See also: October | November | December.