S
M
T
W
T
F
S
30
86°
62°
31
87°
62°
1
85°
65°
2
85°
62°
3
89°
66°
4
90°
63°
5
89°
66°
6
90°
64°
7
85°
65°
8
88°
65°
9
89°
64°
10
84°
63°
11
87°
62°
12
87°
64°
13
86°
62°
14
87°
63°
15
86°
63°
16
87°
62°
17
86°
61°
18
85°
60°
19
84°
60°
20
84°
56°
21
80°
59°
22
79°
60°
23
83°
59°
24
84°
58°
25
83°
58°
26
84°
57°
27
83°
58°
28
83°
58°
29
82°
57°
30
82°
56°
1
80°
54°
2
82°
56°
3
77°
52°
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 77° to 90°, with overnight lows between 52° and 66°. The average high for September is 85° with an average low of 61°. 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.
