S
M
T
W
T
F
S
26
85°
74°
27
89°
75°
28
90°
75°
29
88°
74°
30
90°
75°
31
90°
75°
1
89°
74°
2
90°
75°
3
90°
75°
4
92°
74°
5
90°
74°
6
86°
73°
7
88°
74°
8
89°
73°
9
84°
69°
10
83°
68°
11
83°
70°
12
84°
73°
13
84°
73°
14
85°
72°
15
88°
73°
16
86°
72°
17
89°
66°
18
84°
66°
19
84°
70°
20
88°
71°
21
89°
72°
22
88°
71°
23
89°
72°
24
88°
70°
25
88°
70°
26
82°
69°
27
82°
67°
28
81°
67°
29
82°
66°
30
82°
67°
31
84°
69°
1
87°
70°
2
87°
70°
3
86°
67°
4
87°
63°
5
81°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Smith Island
Smith Island's August 2026 forecast shows daily high temperatures ranging from 81° to 92°, with overnight lows between 63° and 75°. The average high for August is 86° with an average low of 71°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Smith Island. See also: September | October | November.