S
M
T
W
T
F
S
30
80°
63°
31
82°
63°
1
83°
60°
2
82°
56°
3
80°
61°
4
80°
61°
5
79°
60°
6
77°
60°
7
75°
59°
8
75°
53°
9
76°
51°
10
74°
60°
11
75°
59°
12
80°
58°
13
79°
59°
14
80°
58°
15
79°
58°
16
80°
59°
17
Hist. Avg.
76°
54°
18
Hist. Avg.
76°
54°
19
Hist. Avg.
76°
53°
20
Hist. Avg.
75°
53°
21
Hist. Avg.
75°
52°
22
Hist. Avg.
74°
52°
23
Hist. Avg.
74°
52°
24
Hist. Avg.
74°
51°
25
Hist. Avg.
73°
51°
26
Hist. Avg.
73°
50°
27
Hist. Avg.
72°
50°
28
Hist. Avg.
72°
50°
29
Hist. Avg.
72°
49°
30
Hist. Avg.
71°
49°
1
Hist. Avg.
71°
48°
2
Hist. Avg.
70°
48°
3
Hist. Avg.
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Bluffton
Bluffton's September 2026 forecast shows daily high temperatures ranging from 74° to 83°, with overnight lows between 51° and 63°. The average high for September is 79° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Bluffton. See also: October | November | December.
