S
M
T
W
T
F
S
30
73°
53°
31
77°
59°
1
75°
59°
2
79°
53°
3
74°
49°
4
69°
49°
5
68°
50°
6
68°
52°
7
75°
57°
8
77°
58°
9
78°
56°
10
77°
51°
11
71°
52°
12
70°
52°
13
73°
48°
14
69°
48°
15
67°
47°
16
68°
46°
17
71°
53°
18
75°
45°
19
67°
50°
20
69°
44°
21
67°
49°
22
66°
52°
23
73°
53°
24
74°
52°
25
73°
52°
26
69°
53°
27
72°
51°
28
73°
46°
29
70°
50°
30
69°
52°
1
71°
45°
2
72°
41°
3
66°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Greenbush
Greenbush's September 2026 forecast shows daily high temperatures ranging from 66° to 79°, with overnight lows between 39° and 59°. The average high for September is 72° with an average low of 50°. 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 Greenbush. See also: October | November | December.
