S
M
T
W
T
F
S
30
91°
68°
31
87°
62°
1
83°
64°
2
86°
65°
3
87°
65°
4
84°
66°
5
88°
62°
6
83°
60°
7
81°
59°
8
80°
59°
9
78°
52°
10
75°
51°
11
79°
58°
12
78°
57°
13
74°
57°
14
74°
55°
15
67°
49°
16
68°
55°
17
77°
54°
18
77°
56°
19
78°
56°
20
78°
55°
21
76°
54°
22
77°
50°
23
65°
47°
24
67°
51°
25
70°
52°
26
74°
53°
27
76°
53°
28
75°
52°
29
74°
53°
30
73°
52°
1
73°
50°
2
67°
50°
3
71°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lismore
Lismore's September 2026 forecast shows daily high temperatures ranging from 65° to 91°, with overnight lows between 47° and 68°. The average high for September is 77° with an average low of 56°. 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 Lismore. See also: October | November | December.