S
M
T
W
T
F
S
30
91°
67°
31
90°
67°
1
90°
66°
2
89°
67°
3
91°
66°
4
91°
66°
5
90°
67°
6
90°
64°
7
88°
60°
8
84°
62°
9
85°
65°
10
88°
60°
11
88°
60°
12
87°
62°
13
84°
63°
14
88°
64°
15
87°
63°
16
87°
59°
17
83°
57°
18
81°
57°
19
79°
61°
20
80°
56°
21
79°
55°
22
78°
56°
23
78°
60°
24
79°
60°
25
81°
59°
26
84°
60°
27
83°
59°
28
84°
60°
29
83°
59°
30
78°
58°
1
77°
57°
2
81°
51°
3
76°
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 76° to 91°, with overnight lows between 51° and 67°. The average high for September is 84° 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.
