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
N/A
7
88°
63°
8
80°
56°
9
67°
49°
10
69°
50°
11
70°
52°
12
72°
55°
13
74°
58°
14
73°
57°
15
74°
57°
16
68°
52°
17
69°
52°
18
69°
50°
19
72°
52°
20
67°
53°
21
67°
54°
22
69°
54°
23
70°
53°
24
70°
54°
25
69°
50°
26
66°
46°
27
64°
46°
28
65°
45°
29
66°
45°
30
63°
52°
1
64°
48°
2
61°
47°
3
66°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Frechen
Frechen's September 2026 forecast shows daily high temperatures ranging from 61° to 88°, with overnight lows between 45° and 63°. The average high for September is 69° with an average low of 52°. 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 Frechen. See also: October | November | December.
