S
M
T
W
T
F
S
26
76°
59°
27
77°
54°
28
73°
53°
29
73°
58°
30
76°
62°
31
80°
54°
1
73°
55°
2
73°
54°
3
72°
59°
4
72°
62°
5
80°
61°
6
80°
61°
7
74°
60°
8
79°
62°
9
80°
63°
10
80°
61°
11
77°
62°
12
80°
62°
13
79°
61°
14
80°
53°
15
72°
54°
16
77°
56°
17
78°
59°
18
77°
62°
19
80°
62°
20
75°
56°
21
72°
53°
22
70°
53°
23
70°
52°
24
71°
54°
25
76°
57°
26
76°
58°
27
69°
55°
28
70°
59°
29
75°
58°
30
73°
54°
31
68°
50°
1
67°
51°
2
67°
51°
3
Hist. Avg.
71°
55°
4
Hist. Avg.
71°
55°
5
Hist. Avg.
71°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Winterthur
Winterthur's August 2026 forecast shows daily high temperatures ranging from 67° to 80°, with overnight lows between 50° and 63°. The average high for August is 75° with an average low of 57°. 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 Winterthur. See also: September | October | November.
