S
M
T
W
T
F
S
28
86°
65°
29
85°
65°
30
85°
66°
1
84°
65°
2
83°
61°
3
77°
58°
4
79°
59°
5
79°
63°
6
83°
65°
7
82°
66°
8
83°
65°
9
85°
66°
10
81°
60°
11
80°
63°
12
80°
66°
13
86°
65°
14
87°
58°
15
81°
65°
16
83°
63°
17
81°
59°
18
81°
58°
19
80°
57°
20
81°
61°
21
82°
66°
22
83°
59°
23
82°
58°
24
79°
58°
25
80°
64°
26
81°
66°
27
80°
65°
28
85°
59°
29
80°
57°
30
79°
56°
31
79°
56°
1
80°
57°
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 77° to 87°, with overnight lows between 56° and 66°. The average high for July is 82° with an average low of 62°. 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.