S
M
T
W
T
F
S
30
79°
65°
31
86°
69°
1
86°
72°
2
92°
72°
3
92°
68°
4
83°
67°
5
81°
57°
6
77°
56°
7
80°
59°
8
82°
65°
9
86°
67°
10
79°
58°
11
72°
56°
12
74°
57°
13
77°
59°
14
78°
59°
15
78°
58°
16
77°
50°
17
77°
57°
18
74°
57°
19
79°
59°
20
78°
60°
21
78°
59°
22
77°
58°
23
76°
55°
24
71°
56°
25
77°
57°
26
74°
56°
27
73°
51°
28
65°
50°
29
66°
50°
30
65°
47°
1
63°
45°
2
67°
54°
3
69°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Greentown
Greentown's September 2026 forecast shows daily high temperatures ranging from 63° to 92°, with overnight lows between 45° and 68°. The average high for September is 76° with an average low of 57°. 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 Greentown. See also: October | November | December.