S
M
T
W
T
F
S
30
64°
50°
31
65°
50°
1
64°
52°
2
63°
52°
3
63°
50°
4
64°
50°
5
63°
51°
6
66°
53°
7
65°
54°
8
67°
53°
9
65°
52°
10
65°
54°
11
64°
55°
12
67°
55°
13
67°
54°
14
66°
52°
15
66°
50°
16
61°
49°
17
61°
49°
18
62°
48°
19
61°
48°
20
60°
47°
21
61°
49°
22
61°
49°
23
60°
50°
24
61°
49°
25
60°
51°
26
60°
51°
27
62°
48°
28
61°
48°
29
59°
48°
30
59°
47°
1
60°
47°
2
59°
48°
3
59°
47°
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 59° to 67°, with overnight lows between 47° and 55°. The average high for September is 63° with an average low of 50°. 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.
