S
M
T
W
T
F
S
30
68°
50°
31
68°
52°
1
69°
50°
2
68°
48°
3
67°
48°
4
67°
51°
5
68°
48°
6
66°
50°
7
66°
49°
8
67°
48°
9
65°
49°
10
68°
54°
11
65°
55°
12
71°
53°
13
68°
49°
14
64°
50°
15
65°
51°
16
63°
45°
17
64°
44°
18
Hist. Avg.
63°
47°
19
Hist. Avg.
63°
47°
20
Hist. Avg.
63°
47°
21
Hist. Avg.
62°
46°
22
Hist. Avg.
62°
46°
23
Hist. Avg.
62°
46°
24
Hist. Avg.
61°
46°
25
Hist. Avg.
61°
46°
26
Hist. Avg.
61°
45°
27
Hist. Avg.
60°
45°
28
Hist. Avg.
60°
45°
29
Hist. Avg.
60°
45°
30
Hist. Avg.
59°
45°
1
Hist. Avg.
59°
44°
2
Hist. Avg.
58°
44°
3
Hist. Avg.
58°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Kassel
Kassel's September 2026 forecast shows daily high temperatures ranging from 63° to 71°, with overnight lows between 44° and 55°. The average high for September is 67° 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 Kassel. See also: October | November | December.