S
M
T
W
T
F
S
26
84°
65°
27
85°
65°
28
84°
64°
29
85°
65°
30
84°
64°
31
84°
63°
1
80°
62°
2
77°
60°
3
77°
63°
4
80°
64°
5
80°
63°
6
82°
63°
7
83°
62°
8
83°
64°
9
82°
64°
10
83°
63°
11
83°
64°
12
84°
64°
13
84°
65°
14
85°
61°
15
85°
62°
16
76°
63°
17
81°
60°
18
81°
60°
19
83°
55°
20
79°
54°
21
75°
53°
22
75°
54°
23
76°
55°
24
76°
53°
25
75°
55°
26
75°
56°
27
76°
54°
28
80°
53°
29
74°
53°
30
72°
54°
31
73°
52°
1
74°
53°
2
73°
52°
3
74°
53°
4
75°
51°
5
75°
52°
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 72° to 85°, with overnight lows between 51° and 65°. The average high for August is 79° with an average low of 59°. 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.
