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°
70°
6
82°
69°
7
87°
68°
8
84°
70°
9
84°
66°
10
87°
72°
11
81°
69°
12
84°
71°
13
79°
68°
14
78°
70°
15
84°
71°
16
83°
66°
17
82°
63°
18
83°
62°
19
83°
61°
20
84°
58°
21
80°
59°
22
83°
60°
23
84°
60°
24
80°
60°
25
81°
56°
26
85°
58°
27
86°
63°
28
77°
57°
29
80°
58°
30
83°
61°
31
85°
62°
1
86°
63°
2
87°
62°
3
85°
62°
4
84°
61°
5
83°
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 77° to 87°, with overnight lows between 56° and 71°. The average high for August is 83° with an average low of 62°. 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.