S
M
T
W
T
F
S
30
58°
48°
31
59°
47°
1
58°
47°
2
57°
50°
3
57°
47°
4
58°
46°
5
56°
49°
6
56°
45°
7
57°
44°
8
56°
45°
9
56°
48°
10
57°
47°
11
58°
46°
12
54°
50°
13
55°
49°
14
59°
49°
15
59°
45°
16
54°
43°
17
53°
47°
18
58°
51°
19
59°
51°
20
59°
50°
21
58°
51°
22
59°
49°
23
57°
50°
24
58°
49°
25
56°
46°
26
50°
48°
27
50°
48°
28
54°
49°
29
56°
47°
30
50°
44°
1
49°
42°
2
Hist. Avg.
57°
46°
3
Hist. Avg.
57°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Altastenberg
Altastenberg's September 2026 forecast shows daily high temperatures ranging from 49° to 59°, with overnight lows between 42° and 51°. The average high for September is 56° 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 Altastenberg. See also: October | November | December.
