S
M
T
W
T
F
S
30
72°
47°
31
71°
49°
1
72°
46°
2
70°
46°
3
73°
51°
4
78°
53°
5
77°
49°
6
71°
46°
7
72°
42°
8
69°
45°
9
69°
52°
10
75°
52°
11
75°
45°
12
74°
43°
13
66°
42°
14
66°
42°
15
65°
41°
16
64°
41°
17
66°
46°
18
66°
47°
19
67°
50°
20
73°
41°
21
70°
40°
22
61°
38°
23
71°
46°
24
72°
39°
25
71°
38°
26
Hist. Avg.
66°
43°
27
Hist. Avg.
65°
42°
28
Hist. Avg.
65°
42°
29
Hist. Avg.
64°
42°
30
Hist. Avg.
64°
41°
1
Hist. Avg.
63°
41°
2
Hist. Avg.
63°
40°
3
Hist. Avg.
62°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Quinnesec
Quinnesec's September 2026 forecast shows daily high temperatures ranging from 61° to 78°, with overnight lows between 38° and 53°. The average high for September is 70° with an average low of 45°. 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 Quinnesec. See also: October | November | December.