S
M
T
W
T
F
S
27
36°
21°
28
36°
29°
29
43°
30°
30
45°
32°
31
47°
33°
1
48°
29°
2
48°
24°
3
49°
18°
4
38°
15°
5
31°
14°
6
29°
17°
7
31°
23°
8
35°
16°
9
34°
14°
10
31°
11°
11
33°
8°
12
30°
13°
13
28°
11°
14
28°
9°
15
25°
12°
16
26°
13°
17
28°
14°
18
30°
14°
19
30°
12°
20
33°
18°
21
30°
26°
22
38°
24°
23
40°
20°
24
37°
20°
25
35°
11°
26
35°
14°
27
37°
17°
28
38°
26°
29
Hist. Avg.
37°
18°
30
Hist. Avg.
37°
18°
31
Hist. Avg.
37°
18°
1
Hist. Avg.
37°
18°
2
Hist. Avg.
37°
18°
3
Hist. Avg.
37°
18°
4
Hist. Avg.
38°
18°
5
Hist. Avg.
38°
18°
6
Hist. Avg.
38°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in New Castle Northwest
New Castle Northwest's January 2027 forecast shows daily high temperatures ranging from 25° to 49°, with overnight lows between 8° and 33°. The average high for January is 35° with an average low of 18°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in New Castle Northwest. See also: February | March | April.
