S
M
T
W
T
F
S
30
82°
61°
31
82°
61°
1
81°
60°
2
80°
60°
3
81°
59°
4
81°
59°
5
80°
58°
6
81°
60°
7
82°
60°
8
80°
58°
9
78°
58°
10
79°
57°
11
80°
58°
12
75°
56°
13
74°
54°
14
67°
45°
15
67°
54°
16
69°
51°
17
68°
49°
18
69°
48°
19
75°
50°
20
76°
53°
21
75°
53°
22
72°
45°
23
75°
42°
24
69°
44°
25
70°
50°
26
70°
46°
27
68°
39°
28
66°
39°
29
65°
46°
30
68°
49°
1
64°
47°
2
68°
50°
3
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Lisbon
New Lisbon's September 2026 forecast shows daily high temperatures ranging from 64° to 82°, with overnight lows between 39° and 61°. The average high for September is 74° with an average low of 52°. 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 New Lisbon. See also: October | November | December.