S
M
T
W
T
F
S
29
51°
20°
30
69°
34°
31
55°
38°
1
64°
38°
2
41°
33°
3
53°
34°
4
58°
37°
5
47°
37°
6
48°
29°
7
37°
26°
8
49°
23°
9
56°
24°
10
71°
33°
11
57°
38°
12
58°
30°
13
69°
40°
14
79°
54°
15
64°
50°
16
61°
47°
17
66°
42°
18
58°
42°
19
48°
32°
20
45°
22°
21
48°
33°
22
53°
34°
23
54°
36°
24
56°
36°
25
52°
38°
26
56°
39°
27
55°
36°
28
54°
38°
29
56°
40°
30
55°
37°
1
56°
41°
2
57°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in New Portsmouth
New Portsmouth's April 2026 forecast shows daily high temperatures ranging from 45° to 66°, with overnight lows between 22° and 42°. The average high for April is 54° with an average low of 37°. 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 New Portsmouth. See also: May | June | July.