S
M
T
W
T
F
S
30
53°
39°
31
54°
39°
1
52°
38°
2
51°
38°
3
52°
39°
4
57°
37°
5
57°
38°
6
58°
40°
7
52°
36°
8
51°
35°
9
53°
37°
10
55°
40°
11
54°
37°
12
49°
36°
13
49°
36°
14
51°
35°
15
53°
36°
16
56°
36°
17
56°
39°
18
55°
36°
19
56°
36°
20
55°
40°
21
55°
40°
22
54°
41°
23
55°
36°
24
55°
36°
25
54°
37°
26
55°
37°
27
54°
40°
28
54°
40°
29
53°
39°
30
54°
37°
1
53°
33°
2
52°
33°
3
51°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Zermatt
Zermatt's September 2026 forecast shows daily high temperatures ranging from 49° to 58°, with overnight lows between 33° and 41°. The average high for September is 54° with an average low of 37°. 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 Zermatt. See also: October | November | December.
