S
M
T
W
T
F
S
26
95°
77°
27
95°
79°
28
95°
79°
29
94°
78°
30
95°
80°
31
96°
79°
1
95°
79°
2
95°
78°
3
96°
79°
4
96°
79°
5
95°
78°
6
96°
79°
7
95°
79°
8
96°
78°
9
95°
79°
10
95°
79°
11
94°
78°
12
95°
79°
13
96°
79°
14
96°
78°
15
94°
78°
16
91°
77°
17
93°
78°
18
94°
79°
19
93°
78°
20
92°
78°
21
94°
77°
22
94°
78°
23
92°
77°
24
96°
74°
25
94°
75°
26
92°
75°
27
91°
74°
28
91°
73°
29
92°
74°
30
91°
74°
31
93°
75°
1
90°
76°
2
90°
71°
3
89°
71°
4
88°
72°
5
88°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in South Houston
South Houston's August 2026 forecast shows daily high temperatures ranging from 88° to 96°, with overnight lows between 71° and 80°. The average high for August is 94° with an average low of 77°. 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 South Houston. See also: September | October | November.