S
M
T
W
T
F
S
30
69°
52°
31
66°
50°
1
69°
53°
2
69°
55°
3
66°
55°
4
64°
54°
5
66°
53°
6
64°
54°
7
67°
54°
8
69°
53°
9
69°
53°
10
68°
54°
11
67°
53°
12
65°
53°
13
67°
52°
14
64°
47°
15
63°
46°
16
62°
47°
17
63°
47°
18
65°
51°
19
66°
46°
20
64°
46°
21
60°
48°
22
60°
47°
23
61°
50°
24
61°
50°
25
64°
48°
26
61°
49°
27
59°
48°
28
58°
51°
29
61°
50°
30
63°
44°
1
62°
43°
2
57°
42°
3
57°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Itzehoe
Itzehoe's September 2026 forecast shows daily high temperatures ranging from 57° to 69°, with overnight lows between 42° and 55°. The average high for September is 64° with an average low of 50°. 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 Itzehoe. See also: October | November | December.