S
M
T
W
T
F
S
30
62°
53°
31
62°
52°
1
65°
49°
2
62°
48°
3
61°
52°
4
61°
48°
5
62°
47°
6
61°
48°
7
60°
52°
8
60°
51°
9
64°
53°
10
65°
46°
11
59°
46°
12
58°
47°
13
60°
49°
14
62°
52°
15
64°
52°
16
63°
48°
17
60°
52°
18
63°
53°
19
65°
51°
20
64°
46°
21
57°
44°
22
56°
43°
23
57°
44°
24
55°
46°
25
55°
51°
26
56°
51°
27
57°
49°
28
61°
49°
29
60°
42°
30
53°
41°
1
53°
40°
2
54°
39°
3
54°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clausthal-Zellerfeld
Clausthal-Zellerfeld's September 2026 forecast shows daily high temperatures ranging from 53° to 65°, with overnight lows between 39° and 53°. The average high for September is 60° with an average low of 48°. 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 Clausthal-Zellerfeld. See also: October | November | December.
