S
M
T
W
T
F
S
30
71°
57°
31
70°
54°
1
69°
52°
2
65°
51°
3
66°
53°
4
68°
56°
5
69°
56°
6
68°
55°
7
69°
57°
8
69°
57°
9
68°
56°
10
68°
56°
11
67°
51°
12
67°
55°
13
66°
55°
14
67°
54°
15
66°
53°
16
63°
51°
17
64°
52°
18
65°
52°
19
61°
53°
20
62°
51°
21
63°
52°
22
64°
55°
23
66°
54°
24
Hist. Avg.
59°
48°
25
Hist. Avg.
58°
48°
26
Hist. Avg.
58°
47°
27
Hist. Avg.
58°
47°
28
Hist. Avg.
57°
47°
29
Hist. Avg.
57°
47°
30
Hist. Avg.
57°
46°
1
Hist. Avg.
57°
46°
2
Hist. Avg.
56°
46°
3
Hist. Avg.
56°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Carlsruhe
Carlsruhe's September 2026 forecast shows daily high temperatures ranging from 61° to 71°, with overnight lows between 51° and 57°. The average high for September is 66° 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 Carlsruhe. See also: October | November | December.