S
M
T
W
T
F
S
27
87°
63°
28
80°
61°
29
94°
73°
30
95°
68°
1
95°
73°
2
78°
67°
3
71°
66°
4
83°
59°
5
85°
53°
6
86°
52°
7
90°
55°
8
92°
55°
9
93°
59°
10
85°
57°
11
93°
56°
12
95°
63°
13
94°
70°
14
92°
74°
15
94°
66°
16
72°
49°
17
67°
43°
18
73°
37°
19
76°
43°
20
79°
43°
21
80°
46°
22
81°
46°
23
83°
48°
24
85°
48°
25
79°
49°
26
78°
49°
27
78°
49°
28
83°
49°
29
81°
53°
30
76°
60°
31
72°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Posey
Posey's October 2026 forecast shows daily high temperatures ranging from 72° to 83°, with overnight lows between 49° and 61°. The average high for October is 78° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Posey. See also: November | December | January.