S
M
T
W
T
F
S
29
44°
17°
30
61°
32°
31
48°
39°
1
56°
37°
2
43°
34°
3
51°
35°
4
53°
38°
5
47°
39°
6
49°
29°
7
43°
24°
8
45°
23°
9
49°
33°
10
55°
43°
11
57°
29°
12
56°
42°
13
61°
54°
14
69°
53°
15
58°
37°
16
48°
35°
17
51°
39°
18
53°
39°
19
58°
38°
20
57°
43°
21
58°
37°
22
50°
37°
23
51°
39°
24
55°
42°
25
59°
42°
26
53°
41°
27
53°
42°
28
54°
40°
29
53°
37°
30
57°
40°
1
55°
44°
2
64°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Newcastle
Newcastle's April 2026 forecast shows daily high temperatures ranging from 45° to 69°, with overnight lows between 23° and 54°. The average high for April is 55° with an average low of 40°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Newcastle. See also: May | June | July.