S
M
T
W
T
F
S
30
69°
51°
31
68°
52°
1
70°
51°
2
69°
55°
3
71°
53°
4
71°
54°
5
70°
52°
6
69°
53°
7
71°
51°
8
72°
54°
9
72°
51°
10
70°
52°
11
70°
54°
12
69°
56°
13
73°
54°
14
71°
53°
15
68°
56°
16
72°
56°
17
74°
57°
18
74°
54°
19
72°
47°
20
72°
47°
21
61°
50°
22
63°
46°
23
65°
47°
24
64°
48°
25
63°
42°
26
64°
40°
27
59°
43°
28
58°
45°
29
58°
45°
30
59°
40°
1
Hist. Avg.
59°
43°
2
Hist. Avg.
59°
42°
3
Hist. Avg.
58°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Green Haven
Green Haven's September 2026 forecast shows daily high temperatures ranging from 58° to 74°, with overnight lows between 40° and 57°. The average high for September is 68° 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 Green Haven. See also: October | November | December.
