S
M
T
W
T
F
S
26
98°
76°
27
100°
74°
28
100°
74°
29
98°
75°
30
99°
76°
31
98°
76°
1
100°
77°
2
98°
76°
3
99°
75°
4
97°
74°
5
96°
75°
6
96°
74°
7
97°
75°
8
97°
76°
9
98°
75°
10
98°
77°
11
99°
77°
12
100°
76°
13
100°
77°
14
99°
77°
15
99°
75°
16
98°
76°
17
98°
75°
18
99°
74°
19
98°
74°
20
99°
75°
21
99°
76°
22
98°
77°
23
100°
75°
24
99°
75°
25
98°
74°
26
98°
73°
27
97°
73°
28
98°
74°
29
98°
73°
30
97°
74°
31
98°
74°
1
97°
75°
2
97°
75°
3
96°
76°
4
97°
75°
5
97°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sebastian
Sebastian's August 2026 forecast shows daily high temperatures ranging from 96° to 100°, with overnight lows between 73° and 77°. The average high for August is 98° 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 Sebastian. See also: September | October | November.
