S
M
T
W
T
F
S
26
61°
43°
27
74°
39°
28
73°
51°
29
62°
49°
30
52°
40°
1
53°
36°
2
46°
34°
3
59°
34°
4
72°
49°
5
73°
57°
6
57°
47°
7
61°
37°
8
62°
40°
9
68°
49°
10
64°
48°
11
63°
39°
12
69°
40°
13
68°
48°
14
57°
42°
15
68°
39°
16
72°
51°
17
82°
60°
18
87°
66°
19
87°
65°
20
75°
50°
21
64°
47°
22
64°
52°
23
73°
53°
24
74°
57°
25
76°
61°
26
79°
66°
27
74°
57°
28
78°
49°
29
78°
54°
30
69°
46°
31
71°
46°
1
72°
50°
2
71°
51°
3
75°
53°
4
78°
57°
5
80°
58°
6
81°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in New Martinsville
New Martinsville's May 2026 forecast shows daily high temperatures ranging from 69° to 81°, with overnight lows between 46° and 66°. The average high for May is 76° with an average low of 54°. 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 Martinsville. See also: June | July | August.