S
M
T
W
T
F
S
30
75°
59°
31
78°
59°
1
81°
58°
2
81°
52°
3
78°
51°
4
73°
58°
5
73°
58°
6
80°
52°
7
74°
49°
8
70°
49°
9
72°
55°
10
71°
57°
11
72°
56°
12
78°
56°
13
78°
48°
14
70°
47°
15
67°
47°
16
67°
50°
17
68°
47°
18
67°
45°
19
69°
42°
20
65°
44°
21
66°
51°
22
67°
47°
23
73°
45°
24
71°
52°
25
73°
52°
26
72°
51°
27
74°
50°
28
73°
44°
29
70°
47°
30
62°
48°
1
68°
47°
2
71°
49°
3
62°
38°
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 62° to 81°, with overnight lows between 38° and 59°. The average high for September is 72° 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.
