S
M
T
W
T
F
S
30
79°
60°
31
81°
60°
1
81°
53°
2
78°
53°
3
80°
58°
4
79°
58°
5
76°
57°
6
74°
57°
7
73°
56°
8
76°
49°
9
72°
49°
10
71°
57°
11
73°
56°
12
77°
57°
13
77°
57°
14
78°
55°
15
77°
56°
16
78°
56°
17
Hist. Avg.
73°
56°
18
Hist. Avg.
72°
56°
19
Hist. Avg.
72°
55°
20
Hist. Avg.
72°
55°
21
Hist. Avg.
71°
55°
22
Hist. Avg.
71°
54°
23
Hist. Avg.
70°
54°
24
Hist. Avg.
70°
54°
25
Hist. Avg.
70°
53°
26
Hist. Avg.
69°
53°
27
Hist. Avg.
69°
52°
28
Hist. Avg.
68°
52°
29
Hist. Avg.
68°
52°
30
Hist. Avg.
68°
51°
1
Hist. Avg.
67°
51°
2
Hist. Avg.
67°
51°
3
Hist. Avg.
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Bangor
Bangor's September 2026 forecast shows daily high temperatures ranging from 71° to 81°, with overnight lows between 49° and 60°. The average high for September is 77° with an average low of 56°. 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.
