S
M
T
W
T
F
S
30
88°
70°
31
88°
68°
1
90°
70°
2
93°
70°
3
91°
73°
4
93°
73°
5
88°
72°
6
86°
68°
7
84°
68°
8
81°
70°
9
82°
61°
10
81°
54°
11
82°
61°
12
73°
54°
13
61°
52°
14
75°
55°
15
70°
53°
16
66°
61°
17
72°
63°
18
86°
65°
19
71°
59°
20
69°
55°
21
69°
52°
22
70°
51°
23
71°
50°
24
74°
53°
25
74°
53°
26
75°
52°
27
73°
53°
28
72°
47°
29
72°
53°
30
69°
49°
1
73°
52°
2
71°
52°
3
72°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Schleswig
Schleswig's September 2026 forecast shows daily high temperatures ranging from 66° to 86°, with overnight lows between 47° and 65°. The average high for September is 72° with an average low of 54°. 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 Schleswig. See also: October | November | December.