S
M
T
W
T
F
S
26
86°
68°
27
82°
62°
28
81°
63°
29
82°
68°
30
83°
63°
31
83°
62°
1
84°
63°
2
82°
62°
3
82°
62°
4
82°
61°
5
82°
62°
6
82°
63°
7
83°
63°
8
82°
66°
9
83°
68°
10
84°
67°
11
82°
67°
12
84°
68°
13
86°
62°
14
88°
60°
15
81°
60°
16
81°
61°
17
82°
62°
18
84°
61°
19
82°
60°
20
80°
58°
21
81°
60°
22
81°
62°
23
80°
60°
24
80°
59°
25
81°
65°
26
84°
66°
27
86°
66°
28
88°
65°
29
88°
58°
30
87°
58°
31
80°
61°
1
80°
62°
2
81°
64°
3
85°
57°
4
80°
60°
5
80°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Muncie
Muncie's August 2026 forecast shows daily high temperatures ranging from 80° to 88°, with overnight lows between 57° and 68°. The average high for August is 83° 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 Muncie. See also: September | October | November.