S
M
T
W
T
F
S
28
86°
62°
29
84°
63°
30
78°
59°
1
78°
61°
2
84°
64°
3
79°
61°
4
80°
67°
5
83°
67°
6
86°
69°
7
88°
69°
8
88°
68°
9
87°
69°
10
89°
68°
11
88°
69°
12
87°
68°
13
87°
68°
14
85°
67°
15
88°
68°
16
88°
65°
17
82°
63°
18
81°
62°
19
80°
61°
20
80°
60°
21
81°
61°
22
81°
63°
23
82°
67°
24
85°
68°
25
86°
67°
26
84°
68°
27
82°
62°
28
84°
64°
29
85°
66°
30
87°
61°
31
83°
61°
1
84°
60°
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 78° to 89°, with overnight lows between 59° and 69°. The average high for July is 84° with an average low of 65°. 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.