S
M
T
W
T
F
S
26
92°
72°
27
86°
70°
28
80°
65°
29
80°
62°
30
87°
63°
31
81°
70°
1
73°
65°
2
78°
65°
3
83°
62°
4
86°
69°
5
82°
67°
6
79°
65°
7
85°
68°
8
85°
68°
9
85°
70°
10
85°
65°
11
83°
61°
12
80°
63°
13
81°
62°
14
83°
61°
15
82°
60°
16
83°
61°
17
84°
60°
18
84°
60°
19
89°
65°
20
84°
64°
21
87°
64°
22
87°
65°
23
86°
64°
24
84°
64°
25
83°
63°
26
85°
63°
27
83°
60°
28
80°
62°
29
83°
61°
30
84°
62°
31
85°
62°
1
84°
61°
2
81°
61°
3
83°
60°
4
82°
61°
5
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Schaumburg
Schaumburg's August 2026 forecast shows daily high temperatures ranging from 79° to 89°, with overnight lows between 60° and 70°. The average high for August is 84° with an average low of 63°. 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 Schaumburg. See also: September | October | November.