S
M
T
W
T
F
S
31
69°
37°
1
66°
45°
2
76°
43°
3
86°
49°
4
89°
53°
5
87°
56°
6
75°
56°
7
78°
53°
8
81°
49°
9
86°
52°
10
91°
58°
11
90°
71°
12
90°
69°
13
86°
63°
14
90°
58°
15
79°
61°
16
77°
54°
17
80°
50°
18
73°
57°
19
78°
58°
20
75°
57°
21
78°
58°
22
78°
54°
23
75°
58°
24
81°
60°
25
85°
56°
26
74°
62°
27
80°
61°
28
83°
57°
29
83°
59°
30
N/A
1
93°
76°
2
97°
78°
3
95°
69°
4
90°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
June Weather in New Portsmouth
New Portsmouth's June 2026 forecast shows daily high temperatures ranging from 90° to 97°, with overnight lows between 65° and 78°. The average high for June is 94° with an average low of 72°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in New Portsmouth. See also: July | August | September.
