S
M
T
W
T
F
S
26
92°
69°
27
92°
70°
28
91°
69°
29
90°
67°
30
87°
67°
31
81°
66°
1
85°
68°
2
85°
66°
3
83°
64°
4
86°
67°
5
89°
66°
6
85°
67°
7
83°
63°
8
80°
58°
9
79°
60°
10
82°
66°
11
88°
67°
12
88°
67°
13
87°
66°
14
87°
66°
15
86°
65°
16
82°
65°
17
85°
64°
18
87°
66°
19
86°
65°
20
87°
66°
21
77°
53°
22
77°
54°
23
80°
56°
24
79°
59°
25
85°
54°
26
79°
57°
27
79°
61°
28
80°
60°
29
86°
54°
30
77°
61°
31
76°
59°
1
86°
61°
2
85°
64°
3
87°
59°
4
87°
51°
5
78°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Plainview
Plainview's August 2026 forecast shows daily high temperatures ranging from 76° to 92°, with overnight lows between 51° and 70°. 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 Plainview. See also: September | October | November.