S
M
T
W
T
F
S
26
62°
47°
27
61°
48°
28
62°
46°
29
62°
51°
30
61°
51°
31
57°
46°
1
59°
48°
2
59°
48°
3
60°
49°
4
60°
48°
5
61°
43°
6
55°
44°
7
55°
44°
8
56°
43°
9
54°
44°
10
54°
44°
11
55°
45°
12
54°
45°
13
54°
44°
14
55°
50°
15
59°
46°
16
54°
50°
17
53°
48°
18
56°
45°
19
57°
48°
20
55°
45°
21
53°
47°
22
53°
46°
23
Hist. Avg.
66°
50°
24
Hist. Avg.
66°
50°
25
Hist. Avg.
65°
50°
26
Hist. Avg.
65°
50°
27
Hist. Avg.
65°
50°
28
Hist. Avg.
65°
49°
29
Hist. Avg.
65°
49°
30
Hist. Avg.
65°
49°
31
Hist. Avg.
64°
49°
1
Hist. Avg.
64°
49°
2
Hist. Avg.
64°
49°
3
Hist. Avg.
64°
49°
4
Hist. Avg.
64°
48°
5
Hist. Avg.
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in St. Moritz
St. Moritz's August 2026 forecast shows daily high temperatures ranging from 53° to 62°, with overnight lows between 43° and 51°. The average high for August is 57° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in St. Moritz. See also: September | October | November.
