S
M
T
W
T
F
S
30
72°
63°
31
72°
61°
1
72°
57°
2
70°
55°
3
72°
61°
4
75°
59°
5
63°
46°
6
65°
53°
7
77°
57°
8
59°
47°
9
56°
44°
10
57°
48°
11
57°
48°
12
58°
47°
13
59°
48°
14
60°
49°
15
60°
49°
16
60°
48°
17
61°
45°
18
61°
46°
19
58°
49°
20
60°
51°
21
60°
52°
22
62°
53°
23
62°
52°
24
63°
52°
25
62°
48°
26
60°
44°
27
57°
44°
28
57°
43°
29
58°
44°
30
57°
50°
1
58°
46°
2
55°
45°
3
58°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sundern
Sundern's September 2026 forecast shows daily high temperatures ranging from 55° to 77°, with overnight lows between 43° and 57°. 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 Sundern. See also: October | November | December.
