S
M
T
W
T
F
S
30
76°
58°
31
72°
51°
1
72°
52°
2
73°
53°
3
76°
57°
4
71°
57°
5
71°
55°
6
72°
54°
7
72°
53°
8
74°
54°
9
76°
55°
10
77°
56°
11
77°
56°
12
75°
54°
13
76°
55°
14
75°
55°
15
69°
54°
16
70°
51°
17
69°
50°
18
69°
50°
19
71°
51°
20
65°
49°
21
64°
46°
22
64°
51°
23
72°
52°
24
73°
52°
25
73°
51°
26
71°
50°
27
71°
51°
28
65°
46°
29
60°
48°
30
61°
48°
1
62°
46°
2
60°
43°
3
61°
37°
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 60° to 77°, with overnight lows between 37° and 58°. 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 Bangor. See also: October | November | December.
