S
M
T
W
T
F
S
26
84°
66°
27
86°
67°
28
87°
66°
29
86°
66°
30
86°
65°
31
79°
63°
1
79°
65°
2
86°
67°
3
88°
67°
4
88°
66°
5
87°
67°
6
86°
66°
7
83°
64°
8
83°
59°
9
84°
57°
10
78°
58°
11
79°
59°
12
78°
57°
13
78°
58°
14
79°
57°
15
77°
62°
16
79°
61°
17
83°
60°
18
78°
57°
19
78°
56°
20
81°
57°
21
82°
58°
22
83°
61°
23
84°
63°
24
85°
64°
25
86°
64°
26
86°
62°
27
85°
54°
28
81°
54°
29
77°
55°
30
76°
54°
31
77°
53°
1
76°
54°
2
75°
52°
3
75°
51°
4
77°
54°
5
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Plano
Plano's August 2026 forecast shows daily high temperatures ranging from 75° to 88°, with overnight lows between 51° and 67°. The average high for August is 82° with an average low of 60°. 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 Plano. See also: September | October | November.
