S
M
T
W
T
F
S
28
88°
66°
29
86°
68°
30
83°
67°
1
82°
65°
2
82°
63°
3
85°
64°
4
82°
66°
5
82°
66°
6
79°
59°
7
80°
60°
8
80°
60°
9
81°
62°
10
82°
67°
11
85°
68°
12
85°
67°
13
83°
65°
14
83°
67°
15
82°
65°
16
82°
63°
17
83°
63°
18
82°
64°
19
85°
67°
20
88°
62°
21
80°
60°
22
81°
60°
23
81°
61°
24
83°
65°
25
87°
68°
26
87°
67°
27
82°
67°
28
81°
62°
29
81°
67°
30
87°
68°
31
87°
68°
1
83°
67°
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 79° to 88°, with overnight lows between 59° and 68°. The average high for July is 83° with an average low of 65°. 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.