S
M
T
W
T
F
S
26
92°
74°
27
92°
75°
28
93°
75°
29
93°
76°
30
94°
75°
31
93°
75°
1
93°
76°
2
94°
76°
3
94°
77°
4
95°
76°
5
97°
77°
6
96°
76°
7
94°
75°
8
93°
75°
9
92°
76°
10
93°
75°
11
93°
75°
12
94°
76°
13
93°
75°
14
94°
76°
15
93°
75°
16
93°
75°
17
94°
74°
18
93°
76°
19
93°
77°
20
94°
77°
21
95°
79°
22
94°
77°
23
95°
75°
24
95°
77°
25
94°
75°
26
91°
73°
27
91°
75°
28
92°
76°
29
92°
75°
30
94°
74°
31
93°
75°
1
92°
76°
2
93°
74°
3
94°
75°
4
94°
74°
5
91°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sinton
Sinton's August 2026 forecast shows daily high temperatures ranging from 91° to 97°, with overnight lows between 73° and 79°. The average high for August is 93° 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 Sinton. See also: September | October | November.