S
M
T
W
T
F
S
26
86°
66°
27
87°
67°
28
88°
67°
29
87°
68°
30
87°
70°
31
93°
72°
1
93°
73°
2
92°
73°
3
92°
72°
4
91°
72°
5
91°
66°
6
88°
65°
7
86°
66°
8
87°
66°
9
87°
67°
10
90°
67°
11
91°
68°
12
92°
66°
13
92°
69°
14
93°
72°
15
93°
70°
16
92°
70°
17
91°
69°
18
91°
69°
19
85°
64°
20
86°
69°
21
88°
71°
22
86°
69°
23
86°
64°
24
87°
69°
25
91°
70°
26
92°
69°
27
92°
70°
28
91°
70°
29
91°
68°
30
89°
69°
31
88°
66°
1
87°
67°
2
88°
67°
3
86°
65°
4
88°
67°
5
88°
66°
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 85° to 93°, with overnight lows between 64° and 73°. The average high for August is 89° 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 Plano. See also: September | October | November.
