S
M
T
W
T
F
S
31
75°
48°
1
78°
48°
2
79°
51°
3
70°
54°
4
65°
51°
5
66°
53°
6
65°
48°
7
65°
44°
8
70°
39°
9
74°
44°
10
79°
51°
11
80°
52°
12
81°
49°
13
75°
57°
14
86°
61°
15
86°
57°
16
81°
54°
17
83°
53°
18
85°
55°
19
89°
62°
20
83°
64°
21
80°
62°
22
78°
64°
23
74°
63°
24
72°
61°
25
72°
54°
26
78°
51°
27
81°
55°
28
80°
55°
29
83°
51°
30
85°
51°
1
79°
55°
2
81°
51°
3
84°
55°
4
86°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bangor
Bangor's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.
