S
M
T
W
T
F
S
26
97°
76°
27
99°
76°
28
103°
78°
29
95°
73°
30
93°
71°
31
93°
72°
1
91°
71°
2
89°
69°
3
92°
70°
4
95°
72°
5
94°
71°
6
93°
72°
7
89°
71°
8
92°
74°
9
91°
73°
10
88°
74°
11
87°
74°
12
92°
73°
13
91°
74°
14
87°
73°
15
87°
73°
16
90°
72°
17
90°
73°
18
91°
73°
19
92°
72°
20
92°
73°
21
88°
72°
22
89°
71°
23
92°
72°
24
92°
72°
25
93°
73°
26
93°
73°
27
94°
72°
28
93°
73°
29
92°
72°
30
92°
72°
31
91°
71°
1
92°
71°
2
91°
72°
3
91°
71°
4
90°
72°
5
92°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Posey
Posey's August 2026 forecast shows daily high temperatures ranging from 87° to 103°, with overnight lows between 69° and 78°. The average high for August is 92° with an average low of 72°. 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 Posey. See also: September | October | November.