S
M
T
W
T
F
S
30
78°
56°
31
77°
55°
1
76°
51°
2
69°
52°
3
69°
52°
4
70°
49°
5
70°
50°
6
74°
55°
7
76°
54°
8
70°
54°
9
69°
53°
10
73°
54°
11
76°
53°
12
75°
53°
13
76°
54°
14
76°
43°
15
68°
42°
16
66°
44°
17
68°
43°
18
75°
50°
19
73°
48°
20
74°
45°
21
73°
41°
22
64°
38°
23
63°
39°
24
63°
40°
25
66°
48°
26
66°
47°
27
70°
47°
28
69°
48°
29
69°
47°
30
70°
47°
1
71°
48°
2
69°
38°
3
69°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lisbon Falls
Lisbon Falls's September 2026 forecast shows daily high temperatures ranging from 63° to 78°, with overnight lows between 37° and 56°. The average high for September is 71° with an average low of 48°. 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 Lisbon Falls. See also: October | November | December.
