S
M
T
W
T
F
S
30
70°
52°
31
70°
51°
1
72°
54°
2
72°
58°
3
71°
61°
4
74°
62°
5
78°
60°
6
80°
53°
7
78°
52°
8
71°
52°
9
70°
51°
10
70°
55°
11
70°
57°
12
69°
53°
13
69°
56°
14
74°
55°
15
74°
56°
16
71°
57°
17
70°
56°
18
73°
55°
19
73°
49°
20
71°
52°
21
71°
49°
22
72°
46°
23
65°
46°
24
64°
47°
25
64°
48°
26
65°
44°
27
63°
44°
28
63°
47°
29
61°
43°
30
62°
43°
1
62°
45°
2
68°
42°
3
64°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Peaks Island
Peaks Island's September 2026 forecast shows daily high temperatures ranging from 61° to 80°, with overnight lows between 42° and 62°. The average high for September is 70° with an average low of 51°. 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 Peaks Island. See also: October | November | December.
