S
M
T
W
T
F
S
26
81°
61°
27
81°
58°
28
81°
57°
29
80°
61°
30
82°
63°
31
86°
61°
1
83°
56°
2
81°
56°
3
80°
58°
4
80°
56°
5
81°
56°
6
80°
55°
7
80°
55°
8
81°
58°
9
80°
62°
10
80°
63°
11
81°
63°
12
80°
61°
13
82°
62°
14
85°
56°
15
82°
55°
16
79°
58°
17
82°
58°
18
83°
54°
19
79°
53°
20
78°
53°
21
77°
58°
22
79°
54°
23
77°
60°
24
78°
60°
25
77°
58°
26
82°
61°
27
82°
61°
28
83°
60°
29
84°
60°
30
84°
53°
31
76°
53°
1
76°
52°
2
75°
53°
3
77°
58°
4
75°
51°
5
79°
52°
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 75° to 86°, with overnight lows between 51° and 63°. The average high for August is 80° with an average low of 57°. 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.