S
M
T
W
T
F
S
30
79°
60°
31
82°
63°
1
84°
59°
2
85°
58°
3
78°
57°
4
79°
58°
5
79°
64°
6
84°
64°
7
85°
63°
8
80°
63°
9
78°
62°
10
83°
62°
11
83°
60°
12
81°
62°
13
80°
58°
14
79°
55°
15
76°
55°
16
75°
54°
17
75°
53°
18
76°
55°
19
78°
58°
20
79°
60°
21
80°
57°
22
76°
52°
23
75°
57°
24
74°
58°
25
79°
51°
26
78°
50°
27
Hist. Avg.
74°
55°
28
Hist. Avg.
74°
55°
29
Hist. Avg.
74°
54°
30
Hist. Avg.
73°
54°
1
Hist. Avg.
73°
53°
2
Hist. Avg.
72°
53°
3
Hist. Avg.
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in McDonough
McDonough's September 2026 forecast shows daily high temperatures ranging from 74° to 85°, with overnight lows between 50° and 64°. The average high for September is 79° with an average low of 58°. 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 McDonough. See also: October | November | December.
