S
M
T
W
T
F
S
30
80°
64°
31
83°
65°
1
85°
60°
2
80°
59°
3
79°
59°
4
79°
58°
5
80°
57°
6
80°
61°
7
82°
58°
8
81°
62°
9
83°
63°
10
83°
62°
11
82°
60°
12
83°
62°
13
83°
62°
14
82°
61°
15
83°
62°
16
83°
61°
17
80°
60°
18
81°
61°
19
80°
60°
20
81°
60°
21
80°
58°
22
79°
51°
23
73°
51°
24
Hist. Avg.
76°
55°
25
Hist. Avg.
76°
54°
26
Hist. Avg.
75°
54°
27
Hist. Avg.
75°
53°
28
Hist. Avg.
75°
53°
29
Hist. Avg.
74°
52°
30
Hist. Avg.
74°
52°
1
Hist. Avg.
73°
52°
2
Hist. Avg.
73°
51°
3
Hist. Avg.
73°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in McNair
McNair's September 2026 forecast shows daily high temperatures ranging from 73° to 85°, with overnight lows between 51° and 65°. The average high for September is 81° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in McNair. See also: October | November | December.
