S
M
T
W
T
F
S
30
81°
60°
31
77°
54°
1
77°
52°
2
76°
54°
3
79°
57°
4
78°
54°
5
82°
60°
6
80°
60°
7
74°
57°
8
77°
59°
9
75°
57°
10
76°
58°
11
73°
54°
12
75°
57°
13
73°
54°
14
71°
50°
15
71°
51°
16
70°
48°
17
70°
49°
18
71°
52°
19
72°
51°
20
71°
51°
21
70°
53°
22
71°
52°
23
72°
55°
24
71°
55°
25
70°
54°
26
67°
53°
27
68°
51°
28
68°
52°
29
67°
51°
30
68°
48°
1
68°
48°
2
67°
47°
3
67°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Konstanz
Konstanz's September 2026 forecast shows daily high temperatures ranging from 67° to 82°, with overnight lows between 46° and 60°. The average high for September is 73° with an average low of 53°. 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 Konstanz. See also: October | November | December.
