S
M
T
W
T
F
S
30
84°
65°
31
83°
64°
1
84°
64°
2
86°
65°
3
84°
68°
4
87°
68°
5
88°
67°
6
86°
63°
7
84°
67°
8
85°
66°
9
83°
67°
10
81°
66°
11
85°
65°
12
85°
66°
13
86°
65°
14
85°
66°
15
85°
66°
16
84°
65°
17
84°
65°
18
83°
63°
19
82°
63°
20
83°
58°
21
81°
62°
22
80°
63°
23
82°
61°
24
82°
60°
25
81°
58°
26
82°
61°
27
81°
62°
28
81°
60°
29
80°
59°
30
79°
59°
1
80°
57°
2
80°
59°
3
Hist. Avg.
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dunwoody
Dunwoody's September 2026 forecast shows daily high temperatures ranging from 79° to 88°, with overnight lows between 57° and 68°. The average high for September is 83° with an average low of 63°. 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 Dunwoody. See also: October | November | December.
