S
M
T
W
T
F
S
30
71°
51°
31
70°
50°
1
71°
51°
2
69°
50°
3
70°
51°
4
70°
49°
5
69°
48°
6
68°
48°
7
68°
47°
8
69°
49°
9
67°
48°
10
72°
51°
11
73°
51°
12
72°
53°
13
72°
47°
14
66°
49°
15
65°
53°
16
66°
50°
17
65°
53°
18
70°
53°
19
71°
51°
20
70°
53°
21
71°
54°
22
71°
53°
23
70°
49°
24
64°
49°
25
65°
52°
26
68°
51°
27
65°
44°
28
61°
50°
29
60°
49°
30
65°
49°
1
66°
50°
2
68°
51°
3
61°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Altendiez
Altendiez's September 2026 forecast shows daily high temperatures ranging from 60° to 73°, with overnight lows between 41° and 54°. The average high for September is 68° with an average low of 50°. 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 Altendiez. See also: October | November | December.