S
M
T
W
T
F
S
26
59°
44°
27
61°
45°
28
62°
44°
29
59°
41°
30
64°
44°
1
67°
47°
2
61°
44°
3
60°
45°
4
60°
42°
5
61°
42°
6
64°
52°
7
72°
51°
8
67°
48°
9
65°
52°
10
64°
44°
11
63°
44°
12
62°
43°
13
63°
44°
14
65°
49°
15
65°
51°
16
66°
52°
17
70°
54°
18
73°
47°
19
66°
47°
20
67°
48°
21
70°
58°
22
75°
59°
23
76°
59°
24
78°
58°
25
75°
59°
26
79°
61°
27
79°
56°
28
71°
54°
29
80°
59°
30
81°
56°
31
75°
53°
1
77°
55°
2
76°
54°
3
77°
61°
4
79°
60°
5
76°
61°
6
74°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bluffton
Bluffton's May 2026 forecast shows daily high temperatures ranging from 59° to 81°, with overnight lows between 41° and 61°. The average high for May is 69° with an average low of 51°. 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 Bluffton. See also: June | July | August.