S
M
T
W
T
F
S
26
93°
66°
27
95°
68°
28
95°
69°
29
96°
70°
30
96°
70°
31
97°
69°
1
97°
69°
2
96°
67°
3
96°
63°
4
90°
65°
5
96°
63°
6
89°
66°
7
90°
66°
8
93°
64°
9
91°
65°
10
92°
67°
11
95°
66°
12
96°
66°
13
95°
61°
14
92°
60°
15
87°
59°
16
87°
60°
17
88°
60°
18
88°
61°
19
89°
63°
20
87°
64°
21
90°
62°
22
90°
62°
23
91°
63°
24
93°
65°
25
92°
65°
26
93°
64°
27
92°
63°
28
88°
62°
29
86°
63°
30
89°
60°
31
92°
58°
1
83°
61°
2
85°
65°
3
Hist. Avg.
89°
63°
4
Hist. Avg.
89°
62°
5
Hist. Avg.
89°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Plains
Plains's August 2026 forecast shows daily high temperatures ranging from 83° to 97°, with overnight lows between 58° and 70°. The average high for August is 92° with an average low of 64°. 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 Plains. See also: September | October | November.