S
M
T
W
T
F
S
30
44°
31°
31
44°
31°
1
42°
30°
2
44°
29°
3
46°
30°
4
50°
31°
5
47°
33°
6
47°
33°
7
48°
33°
8
49°
35°
9
40°
23°
10
37°
23°
11
36°
23°
12
38°
23°
13
39°
24°
14
43°
28°
15
42°
28°
16
39°
26°
17
43°
24°
18
34°
24°
19
38°
24°
20
43°
25°
21
41°
24°
22
N/A
23
36°
20°
24
40°
21°
25
35°
19°
26
38°
21°
27
63°
43°
28
65°
41°
29
63°
44°
30
59°
43°
1
55°
44°
2
58°
44°
3
58°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Zermatt
Zermatt's September 2026 forecast shows daily high temperatures ranging from 55° to 65°, with overnight lows between 41° and 44°. The average high for September is 60° with an average low of 43°. 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.
