S
M
T
W
T
F
S
26
83°
71°
27
84°
64°
28
85°
65°
29
86°
70°
30
91°
64°
31
88°
68°
1
92°
65°
2
86°
65°
3
85°
66°
4
82°
63°
5
83°
64°
6
83°
63°
7
84°
64°
8
82°
66°
9
83°
65°
10
86°
67°
11
87°
70°
12
83°
70°
13
90°
69°
14
90°
61°
15
87°
62°
16
81°
67°
17
83°
69°
18
87°
62°
19
88°
62°
20
83°
66°
21
85°
66°
22
88°
65°
23
86°
66°
24
87°
67°
25
86°
66°
26
89°
64°
27
81°
66°
28
85°
65°
29
83°
67°
30
85°
67°
31
87°
66°
1
85°
65°
2
83°
65°
3
81°
58°
4
82°
58°
5
77°
57°
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 77° to 92°, with overnight lows between 57° and 71°. The average high for August is 85° with an average low of 65°. 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.
