S
M
T
W
T
F
S
30
85°
70°
31
84°
65°
1
82°
64°
2
78°
65°
3
78°
65°
4
79°
66°
5
77°
63°
6
77°
64°
7
78°
65°
8
77°
66°
9
77°
65°
10
75°
63°
11
76°
63°
12
78°
65°
13
76°
64°
14
77°
63°
15
74°
64°
16
75°
62°
17
73°
61°
18
74°
62°
19
74°
66°
20
73°
68°
21
Hist. Avg.
75°
63°
22
Hist. Avg.
75°
62°
23
Hist. Avg.
75°
62°
24
Hist. Avg.
74°
62°
25
Hist. Avg.
74°
61°
26
Hist. Avg.
74°
61°
27
Hist. Avg.
73°
60°
28
Hist. Avg.
73°
60°
29
Hist. Avg.
72°
60°
30
Hist. Avg.
72°
59°
1
Hist. Avg.
72°
59°
2
Hist. Avg.
71°
58°
3
Hist. Avg.
71°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Downtown Flushing
Downtown Flushing's September 2026 forecast shows daily high temperatures ranging from 73° to 85°, with overnight lows between 61° and 70°. The average high for September is 77° with an average low of 65°. 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 Downtown Flushing. See also: October | November | December.