S
M
T
W
T
F
S
26
84°
65°
27
88°
69°
28
88°
69°
29
90°
67°
30
89°
63°
31
83°
63°
1
83°
64°
2
84°
63°
3
83°
62°
4
84°
63°
5
84°
63°
6
85°
67°
7
85°
68°
8
83°
68°
9
83°
68°
10
84°
68°
11
83°
67°
12
89°
65°
13
87°
67°
14
84°
67°
15
88°
65°
16
87°
67°
17
86°
61°
18
82°
61°
19
82°
62°
20
83°
61°
21
82°
62°
22
86°
63°
23
87°
63°
24
86°
65°
25
87°
65°
26
87°
66°
27
Hist. Avg.
84°
66°
28
Hist. Avg.
84°
66°
29
Hist. Avg.
84°
66°
30
Hist. Avg.
84°
66°
31
Hist. Avg.
83°
65°
1
Hist. Avg.
83°
65°
2
Hist. Avg.
83°
65°
3
Hist. Avg.
83°
65°
4
Hist. Avg.
82°
64°
5
Hist. Avg.
82°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Houston
Houston's August 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 61° and 69°. The average high for August is 85° with an average low of 65°. 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.