S
M
T
W
T
F
S
26
86°
70°
27
88°
70°
28
89°
71°
29
88°
71°
30
88°
70°
31
88°
71°
1
87°
71°
2
90°
72°
3
89°
72°
4
88°
71°
5
89°
71°
6
89°
72°
7
90°
71°
8
88°
68°
9
84°
67°
10
82°
68°
11
88°
72°
12
89°
72°
13
89°
71°
14
88°
71°
15
88°
69°
16
87°
66°
17
87°
64°
18
82°
64°
19
84°
66°
20
87°
67°
21
88°
68°
22
87°
67°
23
82°
64°
24
81°
62°
25
80°
61°
26
80°
60°
27
81°
60°
28
80°
61°
29
80°
62°
30
81°
66°
31
83°
66°
1
84°
65°
2
86°
65°
3
86°
59°
4
85°
57°
5
79°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mattoon Township
Mattoon Township's August 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 57° and 72°. The average high for August is 86° 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 Mattoon Township. See also: September | October | November.
