S
M
T
W
T
F
S
28
85°
67°
29
86°
62°
30
84°
63°
1
85°
68°
2
87°
71°
3
90°
71°
4
91°
70°
5
91°
71°
6
90°
66°
7
89°
65°
8
87°
64°
9
85°
70°
10
89°
69°
11
90°
71°
12
91°
72°
13
92°
66°
14
89°
65°
15
85°
66°
16
88°
65°
17
89°
71°
18
89°
71°
19
90°
69°
20
91°
71°
21
90°
70°
22
91°
71°
23
86°
71°
24
85°
70°
25
85°
71°
26
86°
71°
27
86°
70°
28
89°
71°
29
89°
70°
30
91°
71°
31
91°
71°
1
90°
70°
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 84° to 92°, with overnight lows between 62° and 72°. The average high for July is 88° with an average low of 69°. 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.