S
M
T
W
T
F
S
31
75°
52°
1
66°
55°
2
70°
55°
3
74°
55°
4
72°
58°
5
69°
50°
6
69°
45°
7
77°
48°
8
68°
57°
9
70°
57°
10
70°
53°
11
68°
57°
12
67°
49°
13
68°
47°
14
70°
56°
15
79°
61°
16
67°
52°
17
71°
48°
18
77°
48°
19
80°
50°
20
84°
55°
21
74°
59°
22
59°
54°
23
56°
51°
24
58°
49°
25
60°
49°
26
53°
47°
27
60°
43°
28
60°
42°
29
63°
45°
30
65°
42°
1
60°
41°
2
58°
36°
3
56°
37°
4
67°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lausanne
Lausanne's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Lausanne. See also: October | November | December.
