S
M
T
W
T
F
S
30
71°
49°
31
70°
49°
1
70°
50°
2
71°
51°
3
69°
51°
4
68°
50°
5
71°
50°
6
70°
49°
7
68°
48°
8
69°
47°
9
67°
48°
10
68°
52°
11
67°
46°
12
66°
47°
13
68°
45°
14
69°
52°
15
69°
52°
16
68°
50°
17
66°
45°
18
65°
44°
19
65°
45°
20
69°
50°
21
65°
44°
22
64°
47°
23
67°
50°
24
68°
51°
25
69°
48°
26
68°
41°
27
66°
42°
28
60°
41°
29
59°
40°
30
61°
41°
1
60°
40°
2
Hist. Avg.
62°
44°
3
Hist. Avg.
62°
44°
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 59° to 71°, with overnight lows between 40° and 52°. The average high for September is 67° with an average low of 47°. 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.