S
M
T
W
T
F
S
27
78°
44°
28
78°
45°
29
81°
50°
30
85°
52°
1
89°
57°
2
74°
58°
3
71°
52°
4
77°
48°
5
73°
45°
6
73°
40°
7
82°
40°
8
80°
49°
9
87°
45°
10
67°
54°
11
65°
58°
12
82°
54°
13
90°
62°
14
82°
70°
15
74°
64°
16
73°
49°
17
55°
36°
18
67°
33°
19
71°
34°
20
72°
38°
21
74°
37°
22
72°
40°
23
71°
40°
24
72°
40°
25
76°
41°
26
75°
42°
27
76°
43°
28
77°
45°
29
78°
50°
30
73°
50°
31
71°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in New Castle
New Castle's October 2026 forecast shows daily high temperatures ranging from 71° to 78°, with overnight lows between 50° and 56°. The average high for October is 74° with an average low of 52°. 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 New Castle. See also: November | December | January.
