S
M
T
W
T
F
S
30
81°
56°
31
77°
49°
1
80°
47°
2
78°
47°
3
65°
59°
4
80°
60°
5
72°
53°
6
69°
50°
7
79°
49°
8
74°
46°
9
64°
40°
10
82°
61°
11
71°
50°
12
73°
54°
13
65°
61°
14
69°
43°
15
69°
49°
16
73°
54°
17
71°
55°
18
70°
49°
19
71°
47°
20
65°
48°
21
62°
44°
22
64°
44°
23
64°
46°
24
68°
48°
25
66°
44°
26
61°
41°
27
61°
48°
28
70°
49°
29
64°
45°
30
61°
44°
1
64°
46°
2
66°
47°
3
67°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bangor
Bangor's September 2026 forecast shows daily high temperatures ranging from 61° to 73°, with overnight lows between 41° and 61°. The average high for September is 67° 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 Bangor. See also: October | November | December.
