S
M
T
W
T
F
S
30
79°
67°
31
78°
69°
1
82°
67°
2
71°
65°
3
84°
67°
4
84°
71°
5
79°
68°
6
76°
64°
7
78°
61°
8
80°
62°
9
82°
68°
10
84°
69°
11
79°
70°
12
80°
71°
13
82°
70°
14
79°
59°
15
76°
66°
16
77°
67°
17
83°
65°
18
80°
65°
19
76°
60°
20
72°
59°
21
70°
60°
22
71°
61°
23
70°
60°
24
72°
59°
25
72°
59°
26
68°
56°
27
72°
63°
28
76°
61°
29
76°
60°
30
70°
55°
1
68°
57°
2
70°
61°
3
74°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fort Greene
Fort Greene's September 2026 forecast shows daily high temperatures ranging from 68° to 83°, with overnight lows between 55° and 71°. The average high for September is 74° 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 Fort Greene. See also: October | November | December.