S
M
T
W
T
F
S
26
90°
72°
27
89°
71°
28
88°
71°
29
86°
70°
30
82°
69°
31
81°
69°
1
81°
68°
2
82°
66°
3
82°
68°
4
83°
63°
5
80°
62°
6
81°
63°
7
81°
63°
8
82°
69°
9
80°
69°
10
82°
68°
11
83°
69°
12
83°
69°
13
85°
68°
14
86°
69°
15
86°
69°
16
80°
68°
17
81°
66°
18
80°
65°
19
82°
66°
20
84°
69°
21
80°
59°
22
78°
59°
23
80°
61°
24
79°
60°
25
80°
61°
26
83°
67°
27
87°
67°
28
88°
68°
29
89°
63°
30
88°
59°
31
79°
60°
1
79°
66°
2
83°
61°
3
85°
67°
4
85°
67°
5
88°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Decatur Township
Decatur Township's August 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 58° and 72°. The average high for August is 83° with an average low of 66°. 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 Decatur Township. See also: September | October | November.