S
M
T
W
T
F
S
26
85°
70°
27
90°
71°
28
89°
70°
29
90°
66°
30
86°
68°
31
89°
70°
1
88°
66°
2
89°
70°
3
90°
70°
4
90°
65°
5
89°
64°
6
84°
65°
7
84°
65°
8
85°
66°
9
86°
70°
10
89°
70°
11
88°
68°
12
88°
69°
13
89°
68°
14
86°
69°
15
85°
68°
16
83°
68°
17
86°
69°
18
89°
69°
19
86°
67°
20
85°
68°
21
88°
68°
22
Hist. Avg.
87°
70°
23
Hist. Avg.
87°
70°
24
Hist. Avg.
87°
70°
25
Hist. Avg.
87°
70°
26
Hist. Avg.
87°
70°
27
Hist. Avg.
86°
70°
28
Hist. Avg.
86°
70°
29
Hist. Avg.
86°
69°
30
Hist. Avg.
86°
69°
31
Hist. Avg.
86°
69°
1
Hist. Avg.
85°
69°
2
Hist. Avg.
85°
68°
3
Hist. Avg.
85°
68°
4
Hist. Avg.
85°
68°
5
Hist. Avg.
84°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in McLean
McLean's August 2026 forecast shows daily high temperatures ranging from 83° to 90°, with overnight lows between 64° and 71°. The average high for August is 87° 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.
