S
M
T
W
T
F
S
30
76°
51°
31
73°
49°
1
70°
48°
2
66°
48°
3
63°
59°
4
74°
58°
5
70°
58°
6
69°
52°
7
79°
48°
8
77°
52°
9
64°
51°
10
85°
64°
11
72°
48°
12
68°
42°
13
62°
58°
14
70°
53°
15
65°
43°
16
67°
46°
17
70°
52°
18
76°
54°
19
64°
42°
20
60°
38°
21
65°
52°
22
64°
42°
23
63°
40°
24
61°
52°
25
64°
58°
26
64°
59°
27
60°
56°
28
58°
55°
29
59°
56°
30
63°
56°
1
64°
55°
2
63°
54°
3
61°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Monhegan Plantation
Monhegan Plantation's September 2026 forecast shows daily high temperatures ranging from 58° to 64°, with overnight lows between 52° and 59°. The average high for September is 62° with an average low of 55°. 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 Monhegan Plantation. See also: October | November | December.
