S
M
T
W
T
F
S
27
79°
54°
28
78°
52°
29
72°
50°
30
76°
54°
1
74°
50°
2
70°
50°
3
74°
52°
4
77°
53°
5
77°
53°
6
73°
52°
7
74°
52°
8
75°
53°
9
74°
52°
10
73°
51°
11
74°
46°
12
62°
41°
13
60°
38°
14
59°
37°
15
58°
37°
16
58°
40°
17
59°
37°
18
58°
35°
19
57°
36°
20
57°
35°
21
58°
34°
22
57°
35°
23
73°
45°
24
73°
41°
25
70°
39°
26
60°
36°
27
55°
29°
28
54°
28°
29
52°
34°
30
56°
43°
31
63°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in New Castle Northwest
New Castle Northwest's October 2026 forecast shows daily high temperatures ranging from 52° to 79°, with overnight lows between 28° and 54°. The average high for October is 66° 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 New Castle Northwest. See also: November | December | January.
