S
M
T
W
T
F
S
28
93°
72°
29
90°
73°
30
88°
71°
1
88°
72°
2
87°
70°
3
99°
77°
4
86°
71°
5
87°
72°
6
84°
66°
7
85°
67°
8
84°
68°
9
83°
67°
10
85°
70°
11
86°
73°
12
86°
73°
13
87°
72°
14
87°
73°
15
86°
72°
16
86°
70°
17
87°
69°
18
87°
70°
19
86°
69°
20
87°
72°
21
86°
71°
22
85°
70°
23
85°
70°
24
86°
71°
25
86°
72°
26
87°
72°
27
86°
72°
28
84°
73°
29
86°
72°
30
86°
73°
31
88°
73°
1
87°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Plano
Plano's July 2026 forecast shows daily high temperatures ranging from 83° to 99°, with overnight lows between 66° and 77°. The average high for July is 87° with an average low of 71°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Plano. See also: August | September | October.