S
M
T
W
T
F
S
30
78°
56°
31
77°
56°
1
78°
57°
2
77°
54°
3
76°
46°
4
68°
45°
5
67°
53°
6
70°
56°
7
75°
55°
8
75°
53°
9
72°
47°
10
71°
53°
11
74°
54°
12
74°
55°
13
73°
55°
14
74°
53°
15
73°
49°
16
72°
48°
17
68°
49°
18
71°
45°
19
64°
42°
20
62°
40°
21
60°
39°
22
61°
50°
23
63°
46°
24
63°
40°
25
60°
40°
26
60°
48°
27
67°
49°
28
68°
43°
29
67°
42°
30
62°
44°
1
58°
43°
2
65°
39°
3
58°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Greenbank
Greenbank's September 2026 forecast shows daily high temperatures ranging from 58° to 78°, with overnight lows between 39° and 57°. The average high for September is 69° with an average low of 48°. 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 Greenbank. See also: October | November | December.
