S
M
T
W
T
F
S
30
73°
64°
31
72°
61°
1
72°
57°
2
72°
55°
3
73°
61°
4
77°
63°
5
70°
52°
6
75°
48°
7
86°
61°
8
81°
61°
9
64°
54°
10
N/A
11
68°
49°
12
71°
52°
13
66°
55°
14
73°
52°
15
77°
50°
16
63°
44°
17
63°
46°
18
61°
46°
19
62°
50°
20
64°
46°
21
63°
46°
22
64°
47°
23
63°
45°
24
66°
51°
25
66°
48°
26
58°
47°
27
59°
52°
28
61°
45°
29
57°
44°
30
56°
45°
1
56°
45°
2
57°
44°
3
59°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Blankenheim
Blankenheim's September 2026 forecast shows daily high temperatures ranging from 56° to 77°, with overnight lows between 44° and 55°. The average high for September is 63° with an average low of 48°. 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 Blankenheim. See also: October | November | December.