S
M
T
W
T
F
S
30
76°
60°
31
66°
60°
1
76°
65°
2
74°
66°
3
77°
62°
4
74°
55°
5
71°
54°
6
72°
53°
7
73°
51°
8
67°
50°
9
68°
49°
10
74°
53°
11
68°
52°
12
67°
50°
13
68°
49°
14
66°
47°
15
66°
50°
16
71°
52°
17
70°
47°
18
63°
42°
19
63°
43°
20
70°
51°
21
73°
52°
22
73°
52°
23
72°
50°
24
71°
46°
25
70°
48°
26
70°
48°
27
71°
49°
28
71°
48°
29
69°
42°
30
61°
38°
1
59°
40°
2
67°
47°
3
69°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mcdonough
Mcdonough's September 2026 forecast shows daily high temperatures ranging from 59° to 77°, with overnight lows between 38° and 66°. The average high for September is 70° with an average low of 50°. 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.
