S
M
T
W
T
F
S
26
69°
50°
27
69°
54°
28
67°
57°
29
64°
46°
30
61°
38°
1
55°
43°
2
54°
39°
3
64°
36°
4
75°
51°
5
64°
47°
6
58°
44°
7
62°
37°
8
66°
48°
9
75°
50°
10
68°
53°
11
72°
45°
12
76°
44°
13
66°
48°
14
67°
48°
15
71°
60°
16
76°
62°
17
85°
66°
18
84°
68°
19
75°
59°
20
71°
52°
21
69°
51°
22
72°
52°
23
74°
54°
24
76°
57°
25
76°
60°
26
78°
60°
27
77°
54°
28
78°
60°
29
76°
58°
30
74°
55°
31
71°
55°
1
72°
51°
2
72°
51°
3
73°
52°
4
73°
54°
5
80°
61°
6
82°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Martinsville
Martinsville's May 2026 forecast shows daily high temperatures ranging from 67° to 85°, with overnight lows between 48° and 68°. The average high for May is 75° 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 Martinsville. See also: June | July | August.