S
M
T
W
T
F
S
27
73°
43°
28
74°
46°
29
77°
46°
30
82°
53°
1
85°
57°
2
71°
51°
3
68°
45°
4
74°
45°
5
69°
43°
6
70°
39°
7
80°
41°
8
77°
46°
9
78°
45°
10
67°
50°
11
64°
50°
12
82°
48°
13
86°
62°
14
80°
63°
15
71°
60°
16
71°
47°
17
53°
36°
18
63°
31°
19
68°
33°
20
71°
36°
21
71°
37°
22
70°
38°
23
68°
40°
24
69°
39°
25
71°
39°
26
72°
40°
27
73°
43°
28
74°
44°
29
77°
44°
30
69°
49°
31
65°
52°
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 65° to 69°, with overnight lows between 49° and 52°. The average high for October is 67° with an average low of 51°. 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.
