S
M
T
W
T
F
S
26
89°
68°
27
83°
68°
28
74°
69°
29
77°
64°
30
84°
58°
31
80°
63°
1
70°
65°
2
74°
67°
3
82°
60°
4
84°
63°
5
83°
68°
6
79°
67°
7
85°
68°
8
84°
64°
9
88°
64°
10
89°
68°
11
79°
68°
12
81°
67°
13
80°
66°
14
78°
66°
15
80°
69°
16
81°
62°
17
78°
61°
18
79°
63°
19
81°
62°
20
83°
63°
21
82°
63°
22
83°
64°
23
82°
62°
24
77°
65°
25
80°
66°
26
83°
66°
27
84°
65°
28
84°
65°
29
76°
62°
30
75°
61°
31
75°
61°
1
76°
63°
2
77°
65°
3
76°
65°
4
82°
66°
5
83°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Flossmoor
Flossmoor's August 2026 forecast shows daily high temperatures ranging from 75° to 89°, with overnight lows between 61° and 69°. The average high for August is 80° with an average low of 64°. 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 Flossmoor. See also: September | October | November.
