S
M
T
W
T
F
S
30
64°
57°
31
66°
57°
1
72°
50°
2
70°
48°
3
73°
61°
4
70°
59°
5
66°
52°
6
70°
45°
7
83°
62°
8
70°
53°
9
66°
49°
10
65°
49°
11
67°
48°
12
68°
54°
13
68°
55°
14
70°
54°
15
71°
55°
16
68°
51°
17
66°
51°
18
67°
49°
19
68°
50°
20
64°
52°
21
64°
53°
22
66°
54°
23
67°
54°
24
67°
53°
25
66°
51°
26
63°
48°
27
61°
46°
28
60°
45°
29
62°
46°
30
59°
51°
1
62°
49°
2
59°
46°
3
63°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Itterbeck
Itterbeck's September 2026 forecast shows daily high temperatures ranging from 59° to 83°, with overnight lows between 45° and 62°. The average high for September is 66° with an average low of 51°. 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 Itterbeck. See also: October | November | December.