S
M
T
W
T
F
S
26
92°
73°
27
93°
73°
28
93°
74°
29
94°
72°
30
92°
73°
31
92°
72°
1
90°
71°
2
84°
68°
3
83°
70°
4
83°
70°
5
84°
69°
6
85°
71°
7
87°
71°
8
87°
70°
9
88°
71°
10
89°
71°
11
86°
70°
12
87°
70°
13
88°
69°
14
91°
69°
15
92°
69°
16
89°
68°
17
90°
69°
18
86°
68°
19
90°
62°
20
83°
61°
21
81°
60°
22
81°
61°
23
82°
60°
24
83°
61°
25
83°
67°
26
85°
63°
27
89°
67°
28
89°
67°
29
91°
66°
30
90°
66°
31
88°
65°
1
81°
63°
2
83°
59°
3
79°
58°
4
80°
62°
5
81°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Edwardsville
Edwardsville's August 2026 forecast shows daily high temperatures ranging from 79° to 94°, with overnight lows between 58° and 74°. The average high for August is 87° with an average low of 67°. 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 Edwardsville. See also: September | October | November.
