S
M
T
W
T
F
S
26
91°
67°
27
93°
66°
28
94°
67°
29
92°
69°
30
93°
71°
31
96°
71°
1
97°
72°
2
96°
72°
3
96°
71°
4
94°
66°
5
89°
65°
6
90°
66°
7
91°
67°
8
90°
68°
9
90°
69°
10
91°
67°
11
91°
69°
12
92°
69°
13
92°
68°
14
94°
70°
15
95°
69°
16
91°
70°
17
95°
71°
18
95°
65°
19
89°
64°
20
90°
63°
21
92°
67°
22
95°
71°
23
93°
69°
24
94°
70°
25
95°
69°
26
96°
70°
27
94°
68°
28
89°
68°
29
93°
65°
30
93°
68°
31
85°
63°
1
86°
63°
2
Hist. Avg.
90°
67°
3
Hist. Avg.
90°
66°
4
Hist. Avg.
89°
66°
5
Hist. Avg.
89°
66°
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 85° to 97°, with overnight lows between 63° and 72°. The average high for August is 92° with an average low of 68°. 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.