S
M
T
W
T
F
S
26
95°
77°
27
95°
78°
28
95°
77°
29
96°
78°
30
96°
78°
31
96°
77°
1
95°
78°
2
98°
82°
3
97°
78°
4
96°
78°
5
96°
79°
6
95°
78°
7
94°
79°
8
93°
78°
9
94°
78°
10
87°
74°
11
93°
77°
12
96°
79°
13
96°
79°
14
95°
79°
15
96°
79°
16
95°
77°
17
96°
74°
18
96°
78°
19
97°
79°
20
98°
77°
21
99°
79°
22
103°
79°
23
103°
79°
24
97°
80°
25
99°
79°
26
100°
81°
27
100°
79°
28
97°
78°
29
95°
79°
30
94°
78°
31
94°
77°
1
95°
78°
2
94°
75°
3
93°
77°
4
94°
77°
5
94°
78°
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 93° to 103°, with overnight lows between 75° and 81°. The average high for August is 97° with an average low of 78°. 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.