S
M
T
W
T
F
S
28
98°
80°
29
99°
82°
30
97°
78°
1
97°
79°
2
94°
80°
3
96°
81°
4
98°
80°
5
98°
76°
6
94°
78°
7
97°
80°
8
96°
79°
9
97°
78°
10
98°
79°
11
101°
79°
12
98°
80°
13
94°
75°
14
97°
79°
15
97°
78°
16
98°
79°
17
97°
76°
18
91°
75°
19
90°
75°
20
91°
76°
21
91°
78°
22
92°
76°
23
92°
79°
24
93°
79°
25
96°
78°
26
97°
79°
27
98°
79°
28
97°
80°
29
99°
80°
30
99°
79°
31
98°
80°
1
99°
80°
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 90° to 101°, with overnight lows between 75° and 81°. The average high for July is 96° with an average low of 78°. 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.