S
M
T
W
T
F
S
26
84°
64°
27
84°
66°
28
81°
64°
29
81°
57°
30
88°
55°
31
88°
59°
1
79°
66°
2
79°
63°
3
82°
59°
4
82°
54°
5
84°
52°
6
86°
70°
7
84°
66°
8
88°
61°
9
86°
52°
10
84°
66°
11
77°
63°
12
75°
63°
13
79°
61°
14
82°
68°
15
79°
68°
16
84°
70°
17
81°
61°
18
81°
57°
19
82°
66°
20
79°
59°
21
81°
55°
22
77°
57°
23
75°
55°
24
76°
53°
25
78°
54°
26
79°
62°
27
82°
58°
28
80°
57°
29
81°
57°
30
82°
63°
31
77°
55°
1
76°
53°
2
75°
54°
3
76°
52°
4
80°
54°
5
79°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lyons
Lyons's August 2026 forecast shows daily high temperatures ranging from 75° to 82°, with overnight lows between 52° and 63°. The average high for August is 79° 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 Lyons. See also: September | October | November.