S
M
T
W
T
F
S
26
88°
76°
27
88°
76°
28
89°
77°
29
87°
77°
30
88°
76°
31
89°
76°
1
88°
77°
2
88°
75°
3
89°
75°
4
88°
75°
5
88°
76°
6
87°
77°
7
90°
74°
8
89°
73°
9
89°
73°
10
92°
75°
11
89°
76°
12
88°
75°
13
88°
75°
14
87°
76°
15
87°
75°
16
88°
74°
17
86°
75°
18
87°
75°
19
91°
74°
20
91°
75°
21
90°
74°
22
86°
73°
23
86°
73°
24
87°
74°
25
86°
72°
26
87°
74°
27
86°
73°
28
88°
74°
29
88°
74°
30
87°
75°
31
88°
74°
1
88°
73°
2
86°
73°
3
84°
72°
4
85°
74°
5
85°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St. Simons
St. Simons's August 2026 forecast shows daily high temperatures ranging from 84° to 92°, with overnight lows between 72° and 77°. The average high for August is 88° with an average low of 75°. 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 St. Simons. See also: September | October | November.
