S
M
T
W
T
F
S
26
97°
67°
27
97°
72°
28
91°
67°
29
91°
66°
30
90°
68°
31
73°
65°
1
85°
63°
2
84°
59°
3
85°
64°
4
77°
56°
5
80°
46°
6
82°
55°
7
78°
55°
8
81°
50°
9
82°
62°
10
82°
58°
11
84°
65°
12
87°
62°
13
76°
65°
14
83°
61°
15
83°
67°
16
81°
59°
17
85°
53°
18
80°
53°
19
80°
48°
20
80°
56°
21
82°
60°
22
77°
50°
23
80°
45°
24
84°
53°
25
88°
63°
26
82°
58°
27
81°
53°
28
81°
47°
29
78°
66°
30
84°
67°
31
86°
58°
1
83°
64°
2
83°
64°
3
87°
65°
4
85°
62°
5
87°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Clear Lake
Clear Lake's August 2026 forecast shows daily high temperatures ranging from 78° to 87°, with overnight lows between 58° and 67°. The average high for August is 84° with an average low of 63°. 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 Clear Lake. See also: September | October | November.