S
M
T
W
T
F
S
26
100°
67°
27
90°
68°
28
89°
64°
29
83°
64°
30
92°
64°
31
88°
60°
1
92°
59°
2
100°
56°
3
102°
59°
4
71°
54°
5
80°
50°
6
95°
51°
7
91°
54°
8
98°
56°
9
96°
61°
10
95°
64°
11
96°
61°
12
91°
56°
13
73°
56°
14
79°
57°
15
80°
55°
16
78°
57°
17
82°
59°
18
87°
58°
19
83°
56°
20
85°
58°
21
84°
57°
22
84°
57°
23
81°
55°
24
80°
56°
25
79°
55°
26
82°
50°
27
83°
51°
28
85°
54°
29
84°
54°
30
85°
53°
31
84°
53°
1
84°
52°
2
83°
53°
3
84°
53°
4
83°
52°
5
83°
52°
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 73° to 87°, with overnight lows between 50° and 59°. The average high for August is 82° with an average low of 55°. 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.