S
M
T
W
T
F
S
30
72°
49°
31
71°
48°
1
70°
48°
2
71°
49°
3
71°
49°
4
72°
50°
5
71°
49°
6
70°
48°
7
69°
47°
8
67°
46°
9
68°
44°
10
69°
50°
11
69°
48°
12
68°
46°
13
69°
44°
14
69°
48°
15
72°
47°
16
67°
43°
17
72°
43°
18
72°
44°
19
73°
51°
20
69°
50°
21
67°
50°
22
70°
49°
23
69°
45°
24
65°
42°
25
62°
47°
26
67°
40°
27
65°
40°
28
59°
39°
29
59°
37°
30
58°
38°
1
Hist. Avg.
62°
42°
2
Hist. Avg.
62°
42°
3
Hist. Avg.
61°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Millinocket
Millinocket's September 2026 forecast shows daily high temperatures ranging from 58° to 73°, with overnight lows between 37° and 51°. The average high for September is 68° with an average low of 46°. 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 Millinocket. See also: October | November | December.
