S
M
T
W
T
F
S
26
87°
60°
27
87°
62°
28
77°
65°
29
81°
57°
30
87°
56°
31
89°
60°
1
84°
68°
2
79°
61°
3
82°
54°
4
86°
51°
5
88°
53°
6
85°
67°
7
86°
66°
8
88°
66°
9
84°
54°
10
86°
64°
11
84°
66°
12
76°
64°
13
82°
63°
14
86°
66°
15
81°
63°
16
86°
66°
17
83°
69°
18
83°
54°
19
81°
62°
20
82°
60°
21
83°
51°
22
77°
59°
23
73°
54°
24
74°
54°
25
79°
56°
26
80°
60°
27
80°
57°
28
78°
55°
29
77°
61°
30
79°
63°
31
73°
57°
1
73°
55°
2
71°
53°
3
73°
54°
4
74°
53°
5
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in South Lyon
South Lyon's August 2026 forecast shows daily high temperatures ranging from 71° to 80°, with overnight lows between 53° and 63°. The average high for August is 76° with an average low of 56°. 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 South Lyon. See also: September | October | November.
