S
M
T
W
T
F
S
27
64°
57°
28
70°
60°
29
75°
61°
30
77°
62°
1
84°
64°
2
86°
62°
3
71°
59°
4
63°
59°
5
72°
49°
6
65°
44°
7
71°
42°
8
78°
51°
9
77°
49°
10
74°
58°
11
65°
61°
12
72°
57°
13
79°
57°
14
70°
47°
15
64°
52°
16
70°
55°
17
64°
48°
18
62°
46°
19
60°
46°
20
63°
45°
21
61°
45°
22
64°
36°
23
58°
42°
24
57°
39°
25
58°
43°
26
64°
46°
27
66°
39°
28
56°
38°
29
55°
37°
30
56°
40°
31
61°
44°
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 55° to 79°, with overnight lows between 36° and 61°. The average high for October is 64° with an average low of 47°. 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.
