S
M
T
W
T
F
S
27
70°
47°
28
66°
57°
29
75°
54°
30
74°
49°
1
84°
64°
2
72°
50°
3
66°
42°
4
71°
40°
5
64°
40°
6
64°
34°
7
73°
38°
8
69°
42°
9
70°
37°
10
70°
43°
11
64°
53°
12
74°
57°
13
84°
60°
14
71°
56°
15
70°
49°
16
72°
46°
17
52°
30°
18
63°
27°
19
68°
27°
20
68°
31°
21
66°
32°
22
65°
28°
23
64°
36°
24
65°
33°
25
67°
30°
26
71°
36°
27
67°
42°
28
72°
40°
29
75°
49°
30
63°
36°
31
58°
48°
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 58° to 75°, with overnight lows between 36° and 49°. The average high for October is 65° with an average low of 44°. 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.
