S
M
T
W
T
F
S
26
52°
37°
27
45°
39°
28
48°
34°
29
52°
27°
30
48°
27°
1
55°
25°
2
66°
28°
3
70°
41°
4
63°
36°
5
43°
30°
6
43°
30°
7
59°
25°
8
70°
28°
9
55°
39°
10
55°
34°
11
66°
30°
12
66°
43°
13
73°
37°
14
79°
50°
15
81°
50°
16
64°
45°
17
68°
43°
18
59°
45°
19
48°
37°
20
63°
30°
21
66°
39°
22
55°
45°
23
N/A
24
79°
54°
25
87°
59°
26
89°
60°
27
85°
55°
28
86°
55°
29
80°
51°
30
80°
52°
31
75°
50°
1
77°
55°
2
78°
54°
3
77°
54°
4
78°
57°
5
84°
56°
6
71°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Bluffton
Bluffton's May 2026 forecast shows daily high temperatures ranging from 71° to 89°, with overnight lows between 50° and 60°. The average high for May is 80° with an average low of 55°. 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.