S
M
T
W
T
F
S
30
81°
56°
31
77°
49°
1
80°
47°
2
78°
47°
3
65°
59°
4
80°
60°
5
72°
53°
6
69°
50°
7
79°
49°
8
75°
42°
9
64°
59°
10
82°
55°
11
70°
47°
12
69°
51°
13
69°
57°
14
70°
51°
15
67°
55°
16
68°
50°
17
67°
50°
18
65°
48°
19
62°
45°
20
63°
44°
21
61°
46°
22
60°
51°
23
64°
50°
24
68°
49°
25
65°
50°
26
65°
46°
27
59°
43°
28
63°
45°
29
67°
48°
30
68°
48°
1
67°
49°
2
66°
48°
3
63°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bucksport
Bucksport's September 2026 forecast shows daily high temperatures ranging from 59° to 82°, with overnight lows between 42° and 59°. The average high for September is 66° with an average low of 49°. 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 Bucksport. See also: October | November | December.