S
M
T
W
T
F
S
26
89°
70°
27
90°
71°
28
90°
71°
29
89°
70°
30
90°
70°
31
89°
69°
1
85°
69°
2
87°
67°
3
86°
69°
4
90°
70°
5
90°
71°
6
91°
69°
7
85°
69°
8
89°
68°
9
88°
68°
10
89°
62°
11
83°
63°
12
84°
64°
13
84°
62°
14
87°
63°
15
84°
64°
16
82°
68°
17
83°
67°
18
87°
65°
19
83°
65°
20
82°
64°
21
82°
67°
22
83°
66°
23
82°
63°
24
85°
65°
25
87°
61°
26
88°
59°
27
81°
60°
28
81°
61°
29
82°
63°
30
80°
64°
31
83°
65°
1
85°
60°
2
80°
59°
3
79°
59°
4
79°
58°
5
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in McNair
McNair's August 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 57° and 71°. The average high for August is 85° 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 August weather will actually feel in McNair. See also: September | October | November.
