S
M
T
W
T
F
S
30
72°
58°
31
75°
58°
1
74°
50°
2
72°
51°
3
66°
54°
4
68°
57°
5
70°
58°
6
71°
52°
7
71°
50°
8
66°
51°
9
66°
57°
10
65°
57°
11
71°
55°
12
66°
51°
13
64°
53°
14
62°
51°
15
63°
48°
16
62°
47°
17
63°
53°
18
63°
48°
19
62°
51°
20
63°
55°
21
67°
52°
22
66°
45°
23
63°
48°
24
61°
53°
25
62°
46°
26
Hist. Avg.
65°
49°
27
Hist. Avg.
65°
48°
28
Hist. Avg.
64°
48°
29
Hist. Avg.
64°
48°
30
Hist. Avg.
64°
47°
1
Hist. Avg.
63°
47°
2
Hist. Avg.
63°
47°
3
Hist. Avg.
63°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Vinalhaven
Vinalhaven's September 2026 forecast shows daily high temperatures ranging from 61° to 75°, with overnight lows between 45° and 58°. The average high for September is 66° with an average low of 52°. 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 Vinalhaven. See also: October | November | December.