S
M
T
W
T
F
S
27
85°
63°
28
85°
63°
29
84°
62°
30
82°
63°
1
83°
61°
2
82°
61°
3
83°
60°
4
82°
62°
5
79°
61°
6
80°
61°
7
80°
60°
8
81°
61°
9
81°
61°
10
80°
59°
11
80°
54°
12
69°
51°
13
68°
46°
14
66°
45°
15
66°
44°
16
67°
45°
17
67°
53°
18
68°
45°
19
64°
44°
20
64°
47°
21
65°
48°
22
69°
54°
23
78°
53°
24
76°
52°
25
70°
46°
26
68°
41°
27
64°
40°
28
62°
46°
29
63°
52°
30
65°
45°
31
70°
39°
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 62° to 85°, with overnight lows between 39° and 63°. The average high for October is 74° with an average low of 53°. 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.