S
M
T
W
T
F
S
26
81°
66°
27
64°
57°
28
75°
63°
29
77°
64°
30
75°
66°
1
72°
66°
2
66°
55°
3
68°
50°
4
73°
52°
5
75°
57°
6
81°
66°
7
84°
72°
8
73°
64°
9
81°
64°
10
79°
68°
11
88°
72°
12
70°
64°
13
77°
64°
14
84°
66°
15
72°
59°
16
79°
61°
17
84°
72°
18
82°
68°
19
81°
68°
20
81°
66°
21
82°
70°
22
84°
75°
23
84°
75°
24
84°
73°
25
84°
77°
26
86°
79°
27
86°
79°
28
86°
75°
29
84°
73°
30
84°
72°
31
80°
71°
1
82°
70°
2
81°
66°
3
79°
69°
4
80°
64°
5
84°
68°
6
83°
69°
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 79° to 84°, with overnight lows between 64° and 72°. The average high for May is 82° with an average low of 69°. 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.