S
M
T
W
T
F
S
30
91°
70°
31
93°
70°
1
94°
72°
2
95°
74°
3
94°
73°
4
94°
73°
5
95°
73°
6
93°
71°
7
87°
71°
8
88°
69°
9
90°
70°
10
88°
67°
11
90°
67°
12
87°
66°
13
85°
64°
14
86°
63°
15
85°
66°
16
80°
66°
17
79°
65°
18
83°
66°
19
81°
65°
20
77°
63°
21
80°
61°
22
79°
61°
23
80°
62°
24
83°
64°
25
83°
64°
26
76°
63°
27
75°
64°
28
75°
63°
29
76°
62°
30
78°
62°
1
74°
61°
2
74°
61°
3
75°
60°
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 74° to 95°, with overnight lows between 60° and 74°. The average high for September is 84° with an average low of 66°. 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.
