S
M
T
W
T
F
S
26
86°
62°
27
87°
62°
28
87°
61°
29
88°
63°
30
87°
63°
31
88°
62°
1
87°
63°
2
88°
62°
3
81°
55°
4
80°
57°
5
80°
54°
6
81°
55°
7
80°
54°
8
82°
53°
9
80°
55°
10
80°
61°
11
86°
59°
12
81°
62°
13
86°
61°
14
86°
60°
15
81°
59°
16
84°
60°
17
85°
57°
18
81°
54°
19
78°
55°
20
78°
54°
21
79°
59°
22
83°
60°
23
84°
58°
24
77°
51°
25
77°
56°
26
80°
52°
27
77°
51°
28
76°
52°
29
78°
52°
30
81°
53°
31
80°
51°
1
81°
53°
2
80°
57°
3
81°
58°
4
81°
57°
5
74°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lyon
Lyon's August 2026 forecast shows daily high temperatures ranging from 74° to 88°, with overnight lows between 51° and 63°. The average high for August is 82° 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 Lyon. See also: September | October | November.