S
M
T
W
T
F
S
26
93°
70°
27
86°
72°
28
82°
68°
29
81°
59°
30
84°
57°
31
76°
62°
1
70°
66°
2
78°
61°
3
82°
56°
4
84°
59°
5
81°
65°
6
81°
66°
7
85°
64°
8
83°
61°
9
87°
66°
10
85°
67°
11
82°
67°
12
85°
65°
13
79°
62°
14
77°
63°
15
78°
58°
16
76°
59°
17
75°
60°
18
74°
58°
19
77°
58°
20
78°
60°
21
81°
59°
22
85°
65°
23
83°
64°
24
77°
62°
25
79°
63°
26
82°
64°
27
84°
63°
28
83°
62°
29
75°
58°
30
74°
57°
31
74°
57°
1
75°
59°
2
76°
61°
3
76°
62°
4
82°
61°
5
82°
62°
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 74° to 87°, with overnight lows between 57° and 67°. The average high for August is 79° with an average low of 61°. 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.
