S
M
T
W
T
F
S
26
82°
57°
27
81°
57°
28
81°
55°
29
88°
63°
30
79°
64°
1
66°
55°
2
72°
48°
3
73°
41°
4
79°
43°
5
81°
46°
6
86°
59°
7
77°
70°
8
73°
63°
9
66°
59°
10
81°
61°
11
86°
59°
12
72°
59°
13
81°
57°
14
81°
55°
15
81°
46°
16
88°
50°
17
88°
64°
18
90°
61°
19
90°
61°
20
90°
66°
21
88°
64°
22
88°
63°
23
86°
68°
24
86°
68°
25
81°
68°
26
86°
66°
27
82°
68°
28
86°
68°
29
84°
67°
30
85°
68°
31
84°
69°
1
88°
69°
2
88°
66°
3
85°
61°
4
86°
62°
5
81°
66°
6
82°
65°
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 81° to 88°, with overnight lows between 61° and 69°. The average high for May is 85° with an average low of 66°. 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.