S
M
T
W
T
F
S
30
66°
50°
31
66°
50°
1
67°
49°
2
66°
47°
3
65°
47°
4
65°
51°
5
66°
48°
6
64°
49°
7
64°
48°
8
63°
47°
9
63°
51°
10
67°
54°
11
63°
55°
12
69°
53°
13
67°
51°
14
62°
52°
15
65°
53°
16
61°
45°
17
62°
44°
18
Hist. Avg.
64°
48°
19
Hist. Avg.
63°
48°
20
Hist. Avg.
63°
48°
21
Hist. Avg.
63°
47°
22
Hist. Avg.
62°
47°
23
Hist. Avg.
62°
47°
24
Hist. Avg.
62°
47°
25
Hist. Avg.
62°
46°
26
Hist. Avg.
61°
46°
27
Hist. Avg.
61°
46°
28
Hist. Avg.
61°
46°
29
Hist. Avg.
60°
46°
30
Hist. Avg.
60°
45°
1
Hist. Avg.
60°
45°
2
Hist. Avg.
59°
45°
3
Hist. Avg.
59°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Nieheim
Nieheim's September 2026 forecast shows daily high temperatures ranging from 61° to 69°, with overnight lows between 44° and 55°. The average high for September is 65° 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 Nieheim. See also: October | November | December.