S
M
T
W
T
F
S
26
100°
70°
27
100°
67°
28
100°
67°
29
98°
66°
30
97°
65°
31
97°
63°
1
95°
62°
2
95°
63°
3
97°
62°
4
98°
63°
5
97°
62°
6
97°
62°
7
96°
65°
8
98°
67°
9
99°
67°
10
99°
65°
11
98°
60°
12
95°
61°
13
93°
59°
14
93°
58°
15
92°
59°
16
92°
60°
17
94°
61°
18
97°
63°
19
98°
66°
20
99°
66°
21
99°
64°
22
97°
61°
23
98°
60°
24
95°
61°
25
92°
58°
26
91°
56°
27
90°
56°
28
91°
57°
29
91°
57°
30
92°
60°
31
95°
62°
1
97°
61°
2
98°
63°
3
98°
64°
4
97°
64°
5
98°
63°
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 90° to 100°, with overnight lows between 56° and 70°. The average high for August is 96° with an average low of 62°. 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.