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