S
M
T
W
T
F
S
26
62°
40°
27
71°
37°
28
66°
37°
29
65°
47°
30
58°
46°
1
63°
39°
2
59°
44°
3
58°
39°
4
73°
36°
5
83°
46°
6
71°
53°
7
62°
44°
8
60°
40°
9
55°
44°
10
68°
44°
11
61°
43°
12
66°
35°
13
66°
41°
14
64°
47°
15
66°
43°
16
78°
40°
17
89°
54°
18
92°
57°
19
94°
62°
20
88°
62°
21
63°
48°
22
66°
43°
23
54°
48°
24
53°
51°
25
74°
52°
26
80°
57°
27
82°
56°
28
74°
53°
29
70°
51°
30
67°
48°
31
70°
50°
1
75°
53°
2
76°
56°
3
77°
57°
4
77°
58°
5
79°
59°
6
77°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Greenville
Greenville's May 2026 forecast shows daily high temperatures ranging from 53° to 82°, with overnight lows between 48° and 59°. The average high for May is 74° 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 Greenville. See also: June | July | August.
