S
M
T
W
T
F
S
28
89°
74°
29
92°
73°
30
92°
74°
1
96°
73°
2
93°
73°
3
92°
71°
4
91°
70°
5
86°
69°
6
85°
66°
7
84°
65°
8
87°
67°
9
86°
62°
10
88°
68°
11
88°
67°
12
84°
66°
13
86°
66°
14
86°
66°
15
88°
67°
16
88°
68°
17
89°
69°
18
89°
69°
19
87°
68°
20
87°
68°
21
88°
69°
22
89°
68°
23
88°
69°
24
89°
68°
25
84°
67°
26
88°
69°
27
89°
69°
28
90°
68°
29
89°
68°
30
89°
67°
31
86°
68°
1
86°
68°
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 96°, with overnight lows between 62° and 74°. The average high for July is 88° with an average low of 68°. 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.