S
M
T
W
T
F
S
30
70°
48°
31
69°
47°
1
69°
47°
2
70°
48°
3
70°
53°
4
71°
54°
5
70°
54°
6
69°
55°
7
77°
55°
8
73°
54°
9
74°
54°
10
68°
53°
11
73°
54°
12
68°
53°
13
67°
53°
14
66°
52°
15
66°
51°
16
65°
51°
17
65°
52°
18
66°
51°
19
71°
50°
20
67°
48°
21
74°
50°
22
74°
40°
23
70°
38°
24
63°
42°
25
64°
47°
26
70°
46°
27
68°
49°
28
72°
47°
29
72°
44°
30
71°
46°
1
69°
48°
2
70°
44°
3
70°
44°
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 77°, with overnight lows between 38° and 55°. The average high for September is 69° 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 Lisbon Falls. See also: October | November | December.
