S
M
T
W
T
F
S
26
85°
69°
27
85°
71°
28
84°
70°
29
85°
71°
30
86°
72°
31
87°
71°
1
86°
70°
2
81°
69°
3
80°
66°
4
78°
68°
5
78°
66°
6
79°
65°
7
79°
68°
8
81°
69°
9
83°
70°
10
85°
70°
11
84°
69°
12
81°
69°
13
84°
70°
14
85°
69°
15
81°
70°
16
79°
69°
17
81°
70°
18
85°
70°
19
84°
69°
20
84°
63°
21
82°
61°
22
78°
61°
23
78°
62°
24
79°
63°
25
79°
62°
26
78°
67°
27
80°
62°
28
78°
61°
29
78°
61°
30
77°
60°
31
76°
59°
1
76°
60°
2
77°
61°
3
75°
64°
4
75°
60°
5
78°
59°
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 75° to 87°, with overnight lows between 59° and 72°. The average high for August is 81° with an average low of 66°. 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.
