S
M
T
W
T
F
S
28
76°
72°
29
89°
71°
30
89°
71°
1
101°
76°
2
102°
79°
3
100°
78°
4
98°
77°
5
101°
73°
6
95°
70°
7
91°
66°
8
90°
67°
9
90°
69°
10
90°
69°
11
91°
71°
12
88°
69°
13
89°
68°
14
83°
64°
15
82°
64°
16
83°
65°
17
84°
66°
18
84°
66°
19
85°
71°
20
86°
71°
21
86°
70°
22
90°
71°
23
86°
71°
24
85°
70°
25
89°
71°
26
90°
72°
27
90°
71°
28
89°
70°
29
87°
71°
30
88°
67°
31
83°
65°
1
82°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in McLean
McLean's July 2026 forecast shows daily high temperatures ranging from 82° to 102°, with overnight lows between 64° and 79°. The average high for July is 89° with an average low of 70°. 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 McLean. See also: August | September | October.