S
M
T
W
T
F
S
1
33°
17°
2
44°
14°
3
48°
31°
4
52°
40°
5
58°
48°
6
71°
49°
7
79°
59°
8
61°
45°
9
55°
39°
10
72°
59°
11
72°
38°
12
41°
29°
13
57°
27°
14
45°
31°
15
72°
39°
16
61°
24°
17
27°
13°
18
34°
11°
19
56°
33°
20
61°
32°
21
59°
40°
22
75°
43°
23
43°
26°
24
45°
15°
25
61°
30°
26
78°
50°
27
50°
27°
28
41°
22°
29
60°
29°
30
68°
47°
31
77°
57°
1
59°
43°
2
80°
42°
3
78°
61°
4
83°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in New Castle
New Castle's March 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for March is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how March weather will actually feel in New Castle. See also: April | May | June.
