S
M
T
W
T
F
S
26
59°
46°
27
74°
43°
28
63°
48°
29
60°
45°
30
56°
42°
1
50°
37°
2
47°
32°
3
60°
35°
4
74°
49°
5
66°
44°
6
56°
43°
7
58°
38°
8
62°
43°
9
72°
53°
10
63°
47°
11
67°
37°
12
71°
40°
13
60°
44°
14
64°
44°
15
67°
40°
16
77°
56°
17
84°
63°
18
86°
66°
19
85°
66°
20
69°
50°
21
63°
47°
22
59°
48°
23
69°
56°
24
75°
58°
25
77°
59°
26
79°
62°
27
75°
61°
28
78°
53°
29
74°
52°
30
70°
50°
31
71°
53°
1
73°
55°
2
74°
55°
3
74°
56°
4
75°
59°
5
77°
57°
6
74°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in New Hampshire
New Hampshire's May 2026 forecast shows daily high temperatures ranging from 69° to 79°, with overnight lows between 50° and 62°. The average high for May is 74° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in New Hampshire. See also: June | July | August.
