S
M
T
W
T
F
S
26
96°
73°
27
96°
72°
28
95°
73°
29
96°
73°
30
96°
72°
31
95°
73°
1
96°
73°
2
96°
72°
3
95°
72°
4
96°
71°
5
95°
73°
6
96°
72°
7
91°
68°
8
95°
67°
9
96°
66°
10
89°
69°
11
94°
70°
12
95°
63°
13
92°
65°
14
88°
69°
15
92°
69°
16
95°
70°
17
96°
67°
18
95°
62°
19
90°
61°
20
88°
63°
21
90°
69°
22
94°
69°
23
94°
68°
24
95°
70°
25
94°
70°
26
94°
68°
27
93°
68°
28
93°
61°
29
86°
59°
30
85°
60°
31
86°
62°
1
87°
63°
2
90°
60°
3
84°
60°
4
84°
65°
5
89°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in McLean
McLean's August 2026 forecast shows daily high temperatures ranging from 84° to 96°, with overnight lows between 59° and 73°. The average high for August is 92° 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 August weather will actually feel in McLean. See also: September | October | November.
