S
M
T
W
T
F
S
30
70°
61°
31
68°
59°
1
66°
55°
2
70°
54°
3
70°
61°
4
66°
61°
5
64°
54°
6
68°
50°
7
81°
52°
8
66°
57°
9
63°
54°
10
N/A
11
65°
59°
12
67°
61°
13
66°
57°
14
66°
62°
15
67°
57°
16
63°
57°
17
63°
56°
18
64°
55°
19
64°
56°
20
66°
55°
21
64°
54°
22
63°
53°
23
65°
55°
24
64°
54°
25
64°
53°
26
59°
52°
27
61°
54°
28
61°
49°
29
56°
48°
30
57°
50°
1
57°
51°
2
60°
52°
3
61°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Neuharlingersiel
Neuharlingersiel's September 2026 forecast shows daily high temperatures ranging from 56° to 67°, with overnight lows between 48° and 62°. The average high for September is 63° 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 Neuharlingersiel. See also: October | November | December.