S
M
T
W
T
F
S
26
80°
52°
27
68°
58°
28
64°
54°
29
62°
46°
30
64°
39°
1
60°
43°
2
59°
42°
3
70°
42°
4
72°
55°
5
66°
46°
6
60°
44°
7
65°
40°
8
68°
50°
9
78°
53°
10
71°
48°
11
74°
44°
12
80°
52°
13
72°
53°
14
71°
45°
15
80°
54°
16
73°
66°
17
84°
66°
18
77°
70°
19
80°
57°
20
70°
50°
21
71°
56°
22
69°
63°
23
75°
60°
24
77°
60°
25
80°
62°
26
78°
64°
27
81°
63°
28
78°
61°
29
77°
60°
30
79°
61°
31
80°
58°
1
83°
63°
2
82°
63°
3
76°
59°
4
75°
56°
5
77°
61°
6
82°
64°
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 69° to 83°, with overnight lows between 50° and 70°. The average high for May is 77° with an average low of 61°. 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.
