S
M
T
W
T
F
S
26
70°
42°
27
72°
53°
28
65°
49°
29
52°
35°
30
55°
32°
1
53°
32°
2
63°
30°
3
72°
45°
4
77°
41°
5
56°
36°
6
52°
36°
7
57°
39°
8
56°
40°
9
63°
44°
10
61°
43°
11
66°
45°
12
66°
46°
13
66°
49°
14
64°
47°
15
68°
46°
16
69°
47°
17
72°
53°
18
70°
53°
19
71°
52°
20
69°
51°
21
67°
44°
22
62°
43°
23
64°
45°
24
65°
45°
25
64°
46°
26
65°
46°
27
64°
47°
28
65°
46°
29
67°
53°
30
67°
56°
31
70°
52°
1
72°
54°
2
74°
57°
3
74°
58°
4
78°
58°
5
78°
59°
6
77°
60°
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 52° to 78°, with overnight lows between 36° and 60°. The average high for May is 67° with an average low of 48°. 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.