S
M
T
W
T
F
S
30
84°
70°
31
84°
70°
1
83°
65°
2
76°
62°
3
75°
62°
4
76°
63°
5
76°
61°
6
80°
66°
7
82°
68°
8
82°
68°
9
78°
67°
10
81°
68°
11
82°
67°
12
81°
68°
13
82°
69°
14
81°
59°
15
74°
59°
16
71°
59°
17
72°
58°
18
72°
57°
19
71°
58°
20
71°
57°
21
77°
59°
22
77°
63°
23
76°
55°
24
77°
55°
25
72°
54°
26
69°
56°
27
73°
61°
28
74°
61°
29
75°
53°
30
71°
54°
1
67°
58°
2
68°
59°
3
72°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dumbo
Dumbo's September 2026 forecast shows daily high temperatures ranging from 67° to 84°, with overnight lows between 53° and 70°. The average high for September is 76° with an average low of 61°. 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 Dumbo. See also: October | November | December.