S
M
T
W
T
F
S
30
82°
67°
31
84°
69°
1
87°
70°
2
87°
70°
3
86°
67°
4
87°
63°
5
81°
63°
6
81°
66°
7
83°
67°
8
84°
68°
9
85°
66°
10
81°
67°
11
85°
66°
12
85°
68°
13
84°
67°
14
84°
67°
15
85°
66°
16
85°
67°
17
84°
67°
18
84°
63°
19
83°
60°
20
81°
58°
21
76°
58°
22
76°
64°
23
78°
61°
24
82°
57°
25
75°
57°
26
75°
58°
27
74°
57°
28
79°
60°
29
78°
61°
30
80°
61°
1
78°
62°
2
78°
61°
3
79°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Smith Island
Smith Island's September 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 57° and 70°. The average high for September is 82° with an average low of 64°. 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 Smith Island. See also: October | November | December.
