S
M
T
W
T
F
S
27
78°
55°
28
77°
54°
29
77°
55°
30
76°
53°
1
75°
48°
2
71°
52°
3
75°
53°
4
76°
54°
5
74°
53°
6
73°
53°
7
73°
52°
8
74°
53°
9
73°
52°
10
72°
50°
11
73°
43°
12
60°
38°
13
59°
37°
14
58°
37°
15
58°
36°
16
59°
42°
17
59°
35°
18
56°
34°
19
56°
37°
20
57°
40°
21
56°
40°
22
56°
42°
23
72°
42°
24
70°
39°
25
59°
37°
26
57°
34°
27
52°
28°
28
50°
34°
29
53°
42°
30
56°
37°
31
61°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Greencastle
Greencastle's October 2026 forecast shows daily high temperatures ranging from 50° to 78°, with overnight lows between 28° and 55°. The average high for October is 65° with an average low of 43°. 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.
