S
M
T
W
T
F
S
30
89°
52°
31
89°
55°
1
90°
59°
2
94°
61°
3
94°
52°
4
86°
56°
5
87°
52°
6
90°
50°
7
87°
51°
8
86°
52°
9
89°
53°
10
91°
55°
11
92°
59°
12
93°
59°
13
95°
56°
14
94°
50°
15
87°
52°
16
86°
53°
17
87°
55°
18
88°
57°
19
92°
54°
20
92°
54°
21
91°
56°
22
87°
50°
23
83°
46°
24
82°
47°
25
81°
46°
26
80°
48°
27
81°
51°
28
82°
50°
29
87°
46°
30
81°
46°
1
Hist. Avg.
84°
56°
2
Hist. Avg.
84°
56°
3
Hist. Avg.
84°
55°
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 80° to 95°, with overnight lows between 46° and 61°. The average high for September is 88° with an average low of 53°. 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.
