S
M
T
W
T
F
S
27
65°
59°
28
68°
58°
29
71°
59°
30
77°
60°
1
85°
58°
2
86°
64°
3
71°
54°
4
62°
55°
5
70°
48°
6
63°
39°
7
71°
37°
8
75°
49°
9
74°
45°
10
72°
44°
11
61°
55°
12
71°
56°
13
83°
54°
14
82°
65°
15
69°
57°
16
80°
58°
17
59°
36°
18
62°
32°
19
68°
32°
20
70°
33°
21
64°
35°
22
65°
32°
23
61°
37°
24
61°
31°
25
61°
31°
26
71°
34°
27
67°
46°
28
65°
43°
29
70°
42°
30
69°
51°
31
N/A
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Greencastle
Greencastle's October 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for October is ° with an average low of °. 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 Greencastle. See also: November | December | January.