S
M
T
W
T
F
S
26
95°
81°
27
95°
79°
28
95°
79°
29
95°
81°
30
95°
81°
31
95°
79°
1
93°
79°
2
99°
81°
3
97°
81°
4
95°
79°
5
97°
79°
6
95°
77°
7
95°
81°
8
93°
79°
9
93°
81°
10
86°
75°
11
91°
79°
12
93°
81°
13
95°
81°
14
91°
81°
15
95°
81°
16
97°
79°
17
97°
77°
18
95°
81°
19
95°
81°
20
97°
81°
21
100°
81°
22
102°
81°
23
100°
82°
24
99°
79°
25
99°
81°
26
99°
82°
27
99°
83°
28
97°
77°
29
97°
79°
30
98°
80°
31
91°
81°
1
89°
82°
2
93°
81°
3
90°
81°
4
93°
81°
5
91°
81°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Houston
Houston's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Houston. See also: September | October | November.